HomeConsumer Goods and Services Scuba Rebreather Market

Global Scuba Rebreather Market Size, Share, Demand Report By Product Type (Closed-Circuit Rebreathers, Semi-Closed Rebreathers, Open-Circuit Transition Rebreathers), By Application (Recreational Diving, Professional & Technical Diving, Military & Defense Diving, Search & Rescue Operations, Scientific Research & Exploration), By Component (Oxygen Sensors, Counterlungs, Gas Cylinders, Displays & HUD Units, Scrubbers), By Distribution Channel, By Region & Segment Forecasts, 2025–2030

Report Code: RI800PUB
Last Updated : October, 2025
Author : Anna Morgan

Table of Contents

  1. Executive Summary
    1. Introduction
  2. Market Introduction
    1. Market Definition
    2. Scope of the Study
    3. Market Structure
  3. Research Methodology
    1. Primary Research
    2. Research Methodology
    3. Assumptions & Exclusions
    4. Secondary Data Sources
  4. Market Factor Analysis
    1. Value Chain Analysis: Scuba Rebreather Market
    2. Porters Five Forces Analysis
      1. Bargaining Power of Suppliers
      2. Bargaining Power of Buyers
      3. Threat of Substitution
      4. Threat of New Entrants
      5. Competitive Rivalry
  5. Market Dynamics
    1. Drivers
    2. Restraints
    3. Opportunities
  6. Recent Trends Analysis
  7. Impact of COVID-19 on Scuba Rebreather Market
    1. Pre and Post Covid -19 Market Scenario Analysis
    2. Market Recovery Timeline and Challenge
    3. Measures Taken by Top Players
  8. Regulatory Landscape
  9. Scuba Rebreather Market , By Product Type
    1. Introduction
      1. Market Size and Forecast, By Product Type
    2. Closed-Circuit Rebreathers (CCR)
      1. Market Size and Forecast, By Region
    3. Semi-Closed Rebreathers (SCR)
      1. Market Size and Forecast, By Region
    4. Open-Circuit Transition Rebreathers
      1. Market Size and Forecast, By Region
  10. Scuba Rebreather Market , By Application
    1. Introduction
      1. Market Size and Forecast, By Application
    2. Recreational Diving
      1. Market Size and Forecast, By Region
    3. Professional & Technical Diving
      1. Market Size and Forecast, By Region
    4. Military & Defense Diving
      1. Market Size and Forecast, By Region
    5. Search and Rescue Operations
      1. Market Size and Forecast, By Region
    6. Scientific Research & Exploration
      1. Market Size and Forecast, By Region
  11. Scuba Rebreather Market , By Component
    1. Introduction
      1. Market Size and Forecast, By Component
    2. Oxygen Sensors & Controllers
      1. Market Size and Forecast, By Region
    3. Counterlungs & Breathing Loops
      1. Market Size and Forecast, By Region
    4. Gas Cylinders & Valves
      1. Market Size and Forecast, By Region
    5. Displays, Monitors & HUD Units
      1. Market Size and Forecast, By Region
    6. Scrubbers & Canisters
      1. Market Size and Forecast, By Region
  12. Scuba Rebreather Market , By End User
    1. Introduction
      1. Market Size and Forecast, By End User
    2. Recreational Divers
      1. Market Size and Forecast, By Region
    3. Defense & Naval Forces
      1. Market Size and Forecast, By Region
    4. Marine Research Institutes
      1. Market Size and Forecast, By Region
    5. Rescue and Safety Organizations
      1. Market Size and Forecast, By Region
  13. Scuba Rebreather Market , By Distribution Channel
    1. Introduction
      1. Market Size and Forecast, By Distribution Channel
    2. Offline Retail (Dive Stores, Equipment Distributors)
      1. Market Size and Forecast, By Region
    3. Online Platforms (Manufacturer Websites, E-Commerce)
      1. Market Size and Forecast, By Region
    4. Direct Institutional Sales (Defense, Research Contracts)
      1. Market Size and Forecast, By Region
  14. Regional Overview
    1. Introduction
      1. Market Size and Forecast
    2. North America
      1. Market Size and Forecast
        1. By Product Type
          1. Closed-Circuit Rebreathers (CCR)
            1. Semi-Closed Rebreathers (SCR)
              1. Open-Circuit Transition Rebreathers
              2. By Application
                1. Recreational Diving
                  1. Professional & Technical Diving
                    1. Military & Defense Diving
                      1. Search and Rescue Operations
                        1. Scientific Research & Exploration
                        2. By Component
                          1. Oxygen Sensors & Controllers
                            1. Counterlungs & Breathing Loops
                              1. Gas Cylinders & Valves
                                1. Displays, Monitors & HUD Units
                                  1. Scrubbers & Canisters
                                  2. By End User
                                    1. Recreational Divers
                                      1. Defense & Naval Forces
                                        1. Marine Research Institutes
                                          1. Rescue and Safety Organizations
                                          2. By Distribution Channel
                                            1. Offline Retail (Dive Stores, Equipment Distributors)
                                              1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                1. Direct Institutional Sales (Defense, Research Contracts)
                                              2. U.S.
                                                1. By Product Type
                                                  1. Closed-Circuit Rebreathers (CCR)
                                                    1. Semi-Closed Rebreathers (SCR)
                                                      1. Open-Circuit Transition Rebreathers
                                                      2. By Application
                                                        1. Recreational Diving
                                                          1. Professional & Technical Diving
                                                            1. Military & Defense Diving
                                                              1. Search and Rescue Operations
                                                                1. Scientific Research & Exploration
                                                                2. By Component
                                                                  1. Oxygen Sensors & Controllers
                                                                    1. Counterlungs & Breathing Loops
                                                                      1. Gas Cylinders & Valves
                                                                        1. Displays, Monitors & HUD Units
                                                                          1. Scrubbers & Canisters
                                                                          2. By End User
                                                                            1. Recreational Divers
                                                                              1. Defense & Naval Forces
                                                                                1. Marine Research Institutes
                                                                                  1. Rescue and Safety Organizations
                                                                                  2. By Distribution Channel
                                                                                    1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                      1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                        1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                      2. Canada
                                                                                    2. Europe
                                                                                      1. Market Size and Forecast
                                                                                        1. By Product Type
                                                                                          1. Closed-Circuit Rebreathers (CCR)
                                                                                            1. Semi-Closed Rebreathers (SCR)
                                                                                              1. Open-Circuit Transition Rebreathers
                                                                                              2. By Application
                                                                                                1. Recreational Diving
                                                                                                  1. Professional & Technical Diving
                                                                                                    1. Military & Defense Diving
                                                                                                      1. Search and Rescue Operations
                                                                                                        1. Scientific Research & Exploration
                                                                                                        2. By Component
                                                                                                          1. Oxygen Sensors & Controllers
                                                                                                            1. Counterlungs & Breathing Loops
                                                                                                              1. Gas Cylinders & Valves
                                                                                                                1. Displays, Monitors & HUD Units
                                                                                                                  1. Scrubbers & Canisters
                                                                                                                  2. By End User
                                                                                                                    1. Recreational Divers
                                                                                                                      1. Defense & Naval Forces
                                                                                                                        1. Marine Research Institutes
                                                                                                                          1. Rescue and Safety Organizations
                                                                                                                          2. By Distribution Channel
                                                                                                                            1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                              1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                              2. U.K.
                                                                                                                                1. By Product Type
                                                                                                                                  1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                    1. Semi-Closed Rebreathers (SCR)
                                                                                                                                      1. Open-Circuit Transition Rebreathers
                                                                                                                                      2. By Application
                                                                                                                                        1. Recreational Diving
                                                                                                                                          1. Professional & Technical Diving
                                                                                                                                            1. Military & Defense Diving
                                                                                                                                              1. Search and Rescue Operations
                                                                                                                                                1. Scientific Research & Exploration
                                                                                                                                                2. By Component
                                                                                                                                                  1. Oxygen Sensors & Controllers
                                                                                                                                                    1. Counterlungs & Breathing Loops
                                                                                                                                                      1. Gas Cylinders & Valves
                                                                                                                                                        1. Displays, Monitors & HUD Units
                                                                                                                                                          1. Scrubbers & Canisters
                                                                                                                                                          2. By End User
                                                                                                                                                            1. Recreational Divers
                                                                                                                                                              1. Defense & Naval Forces
                                                                                                                                                                1. Marine Research Institutes
                                                                                                                                                                  1. Rescue and Safety Organizations
                                                                                                                                                                  2. By Distribution Channel
                                                                                                                                                                    1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                      1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                        1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                      2. Germany
                                                                                                                                                                      3. France
                                                                                                                                                                      4. Spain
                                                                                                                                                                      5. Italy
                                                                                                                                                                      6. Russia
                                                                                                                                                                      7. Nordic
                                                                                                                                                                      8. Benelux
                                                                                                                                                                      9. Rest of Europe
                                                                                                                                                                    2. APAC
                                                                                                                                                                      1. Market Size and Forecast
                                                                                                                                                                        1. By Product Type
                                                                                                                                                                          1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                            1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                              1. Open-Circuit Transition Rebreathers
                                                                                                                                                                              2. By Application
                                                                                                                                                                                1. Recreational Diving
                                                                                                                                                                                  1. Professional & Technical Diving
                                                                                                                                                                                    1. Military & Defense Diving
                                                                                                                                                                                      1. Search and Rescue Operations
                                                                                                                                                                                        1. Scientific Research & Exploration
                                                                                                                                                                                        2. By Component
                                                                                                                                                                                          1. Oxygen Sensors & Controllers
                                                                                                                                                                                            1. Counterlungs & Breathing Loops
                                                                                                                                                                                              1. Gas Cylinders & Valves
                                                                                                                                                                                                1. Displays, Monitors & HUD Units
                                                                                                                                                                                                  1. Scrubbers & Canisters
                                                                                                                                                                                                  2. By End User
                                                                                                                                                                                                    1. Recreational Divers
                                                                                                                                                                                                      1. Defense & Naval Forces
                                                                                                                                                                                                        1. Marine Research Institutes
                                                                                                                                                                                                          1. Rescue and Safety Organizations
                                                                                                                                                                                                          2. By Distribution Channel
                                                                                                                                                                                                            1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                              1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                              2. China
                                                                                                                                                                                                                1. By Product Type
                                                                                                                                                                                                                  1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                                                                    1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                                                                      1. Open-Circuit Transition Rebreathers
                                                                                                                                                                                                                      2. By Application
                                                                                                                                                                                                                        1. Recreational Diving
                                                                                                                                                                                                                          1. Professional & Technical Diving
                                                                                                                                                                                                                            1. Military & Defense Diving
                                                                                                                                                                                                                              1. Search and Rescue Operations
                                                                                                                                                                                                                                1. Scientific Research & Exploration
                                                                                                                                                                                                                                2. By Component
                                                                                                                                                                                                                                  1. Oxygen Sensors & Controllers
                                                                                                                                                                                                                                    1. Counterlungs & Breathing Loops
                                                                                                                                                                                                                                      1. Gas Cylinders & Valves
                                                                                                                                                                                                                                        1. Displays, Monitors & HUD Units
                                                                                                                                                                                                                                          1. Scrubbers & Canisters
                                                                                                                                                                                                                                          2. By End User
                                                                                                                                                                                                                                            1. Recreational Divers
                                                                                                                                                                                                                                              1. Defense & Naval Forces
                                                                                                                                                                                                                                                1. Marine Research Institutes
                                                                                                                                                                                                                                                  1. Rescue and Safety Organizations
                                                                                                                                                                                                                                                  2. By Distribution Channel
                                                                                                                                                                                                                                                    1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                                                                      1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                                                        1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                                                                      2. Korea
                                                                                                                                                                                                                                                      3. Japan
                                                                                                                                                                                                                                                      4. India
                                                                                                                                                                                                                                                      5. Australia
                                                                                                                                                                                                                                                      6. Singapore
                                                                                                                                                                                                                                                      7. Taiwan
                                                                                                                                                                                                                                                      8. South East Asia
                                                                                                                                                                                                                                                      9. Rest of Asia-Pacific
                                                                                                                                                                                                                                                    2. Middle East and Africa
                                                                                                                                                                                                                                                      1. Market Size and Forecast
                                                                                                                                                                                                                                                        1. By Product Type
                                                                                                                                                                                                                                                          1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                                                                                                            1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                                                                                                              1. Open-Circuit Transition Rebreathers
                                                                                                                                                                                                                                                              2. By Application
                                                                                                                                                                                                                                                                1. Recreational Diving
                                                                                                                                                                                                                                                                  1. Professional & Technical Diving
                                                                                                                                                                                                                                                                    1. Military & Defense Diving
                                                                                                                                                                                                                                                                      1. Search and Rescue Operations
                                                                                                                                                                                                                                                                        1. Scientific Research & Exploration
                                                                                                                                                                                                                                                                        2. By Component
                                                                                                                                                                                                                                                                          1. Oxygen Sensors & Controllers
                                                                                                                                                                                                                                                                            1. Counterlungs & Breathing Loops
                                                                                                                                                                                                                                                                              1. Gas Cylinders & Valves
                                                                                                                                                                                                                                                                                1. Displays, Monitors & HUD Units
                                                                                                                                                                                                                                                                                  1. Scrubbers & Canisters
                                                                                                                                                                                                                                                                                  2. By End User
                                                                                                                                                                                                                                                                                    1. Recreational Divers
                                                                                                                                                                                                                                                                                      1. Defense & Naval Forces
                                                                                                                                                                                                                                                                                        1. Marine Research Institutes
                                                                                                                                                                                                                                                                                          1. Rescue and Safety Organizations
                                                                                                                                                                                                                                                                                          2. By Distribution Channel
                                                                                                                                                                                                                                                                                            1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                                                                                                              1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                                                                                                1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                                                                                                              2. UAE
                                                                                                                                                                                                                                                                                                1. By Product Type
                                                                                                                                                                                                                                                                                                  1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                                                                                                                                                    1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                                                                                                                                                      1. Open-Circuit Transition Rebreathers
                                                                                                                                                                                                                                                                                                      2. By Application
                                                                                                                                                                                                                                                                                                        1. Recreational Diving
                                                                                                                                                                                                                                                                                                          1. Professional & Technical Diving
                                                                                                                                                                                                                                                                                                            1. Military & Defense Diving
                                                                                                                                                                                                                                                                                                              1. Search and Rescue Operations
                                                                                                                                                                                                                                                                                                                1. Scientific Research & Exploration
                                                                                                                                                                                                                                                                                                                2. By Component
                                                                                                                                                                                                                                                                                                                  1. Oxygen Sensors & Controllers
                                                                                                                                                                                                                                                                                                                    1. Counterlungs & Breathing Loops
                                                                                                                                                                                                                                                                                                                      1. Gas Cylinders & Valves
                                                                                                                                                                                                                                                                                                                        1. Displays, Monitors & HUD Units
                                                                                                                                                                                                                                                                                                                          1. Scrubbers & Canisters
                                                                                                                                                                                                                                                                                                                          2. By End User
                                                                                                                                                                                                                                                                                                                            1. Recreational Divers
                                                                                                                                                                                                                                                                                                                              1. Defense & Naval Forces
                                                                                                                                                                                                                                                                                                                                1. Marine Research Institutes
                                                                                                                                                                                                                                                                                                                                  1. Rescue and Safety Organizations
                                                                                                                                                                                                                                                                                                                                  2. By Distribution Channel
                                                                                                                                                                                                                                                                                                                                    1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                                                                                                                                                      1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                                                                                                                                        1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                                                                                                                                                      2. Turky
                                                                                                                                                                                                                                                                                                                                      3. Saudi Arabia
                                                                                                                                                                                                                                                                                                                                      4. South Africa
                                                                                                                                                                                                                                                                                                                                      5. Egypt
                                                                                                                                                                                                                                                                                                                                      6. Nigeria
                                                                                                                                                                                                                                                                                                                                      7. Rest of MEA
                                                                                                                                                                                                                                                                                                                                    2. LATAM
                                                                                                                                                                                                                                                                                                                                      1. Market Size and Forecast
                                                                                                                                                                                                                                                                                                                                        1. By Product Type
                                                                                                                                                                                                                                                                                                                                          1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                                                                                                                                                                                            1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                                                                                                                                                                                              1. Open-Circuit Transition Rebreathers
                                                                                                                                                                                                                                                                                                                                              2. By Application
                                                                                                                                                                                                                                                                                                                                                1. Recreational Diving
                                                                                                                                                                                                                                                                                                                                                  1. Professional & Technical Diving
                                                                                                                                                                                                                                                                                                                                                    1. Military & Defense Diving
                                                                                                                                                                                                                                                                                                                                                      1. Search and Rescue Operations
                                                                                                                                                                                                                                                                                                                                                        1. Scientific Research & Exploration
                                                                                                                                                                                                                                                                                                                                                        2. By Component
                                                                                                                                                                                                                                                                                                                                                          1. Oxygen Sensors & Controllers
                                                                                                                                                                                                                                                                                                                                                            1. Counterlungs & Breathing Loops
                                                                                                                                                                                                                                                                                                                                                              1. Gas Cylinders & Valves
                                                                                                                                                                                                                                                                                                                                                                1. Displays, Monitors & HUD Units
                                                                                                                                                                                                                                                                                                                                                                  1. Scrubbers & Canisters
                                                                                                                                                                                                                                                                                                                                                                  2. By End User
                                                                                                                                                                                                                                                                                                                                                                    1. Recreational Divers
                                                                                                                                                                                                                                                                                                                                                                      1. Defense & Naval Forces
                                                                                                                                                                                                                                                                                                                                                                        1. Marine Research Institutes
                                                                                                                                                                                                                                                                                                                                                                          1. Rescue and Safety Organizations
                                                                                                                                                                                                                                                                                                                                                                          2. By Distribution Channel
                                                                                                                                                                                                                                                                                                                                                                            1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                                                                                                                                                                                              1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                                                                                                                                                                                1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                                                                                                                                                                                              2. Brazil
                                                                                                                                                                                                                                                                                                                                                                                1. By Product Type
                                                                                                                                                                                                                                                                                                                                                                                  1. Closed-Circuit Rebreathers (CCR)
                                                                                                                                                                                                                                                                                                                                                                                    1. Semi-Closed Rebreathers (SCR)
                                                                                                                                                                                                                                                                                                                                                                                      1. Open-Circuit Transition Rebreathers
                                                                                                                                                                                                                                                                                                                                                                                      2. By Application
                                                                                                                                                                                                                                                                                                                                                                                        1. Recreational Diving
                                                                                                                                                                                                                                                                                                                                                                                          1. Professional & Technical Diving
                                                                                                                                                                                                                                                                                                                                                                                            1. Military & Defense Diving
                                                                                                                                                                                                                                                                                                                                                                                              1. Search and Rescue Operations
                                                                                                                                                                                                                                                                                                                                                                                                1. Scientific Research & Exploration
                                                                                                                                                                                                                                                                                                                                                                                                2. By Component
                                                                                                                                                                                                                                                                                                                                                                                                  1. Oxygen Sensors & Controllers
                                                                                                                                                                                                                                                                                                                                                                                                    1. Counterlungs & Breathing Loops
                                                                                                                                                                                                                                                                                                                                                                                                      1. Gas Cylinders & Valves
                                                                                                                                                                                                                                                                                                                                                                                                        1. Displays, Monitors & HUD Units
                                                                                                                                                                                                                                                                                                                                                                                                          1. Scrubbers & Canisters
                                                                                                                                                                                                                                                                                                                                                                                                          2. By End User
                                                                                                                                                                                                                                                                                                                                                                                                            1. Recreational Divers
                                                                                                                                                                                                                                                                                                                                                                                                              1. Defense & Naval Forces
                                                                                                                                                                                                                                                                                                                                                                                                                1. Marine Research Institutes
                                                                                                                                                                                                                                                                                                                                                                                                                  1. Rescue and Safety Organizations
                                                                                                                                                                                                                                                                                                                                                                                                                  2. By Distribution Channel
                                                                                                                                                                                                                                                                                                                                                                                                                    1. Offline Retail (Dive Stores, Equipment Distributors)
                                                                                                                                                                                                                                                                                                                                                                                                                      1. Online Platforms (Manufacturer Websites, E-Commerce)
                                                                                                                                                                                                                                                                                                                                                                                                                        1. Direct Institutional Sales (Defense, Research Contracts)
                                                                                                                                                                                                                                                                                                                                                                                                                      2. Mexico
                                                                                                                                                                                                                                                                                                                                                                                                                      3. Argentina
                                                                                                                                                                                                                                                                                                                                                                                                                      4. Chile
                                                                                                                                                                                                                                                                                                                                                                                                                      5. Colombia
                                                                                                                                                                                                                                                                                                                                                                                                                      6. Rest of LATAM
                                                                                                                                                                                                                                                                                                                                                                                                                  3. Competitive Landscape, 2024
                                                                                                                                                                                                                                                                                                                                                                                                                    1. Introduction
                                                                                                                                                                                                                                                                                                                                                                                                                    2. Scuba Rebreather Market Share Analysis, 2024 (%)
                                                                                                                                                                                                                                                                                                                                                                                                                      1. Market Share Analysis, 2024
                                                                                                                                                                                                                                                                                                                                                                                                                      2. Competition Ranking, 2024
                                                                                                                                                                                                                                                                                                                                                                                                                      3. Key Developments & Growth Strategies
                                                                                                                                                                                                                                                                                                                                                                                                                        1. Merger & Acquisition
                                                                                                                                                                                                                                                                                                                                                                                                                        2. Product Launch
                                                                                                                                                                                                                                                                                                                                                                                                                        3. Expansion
                                                                                                                                                                                                                                                                                                                                                                                                                      4. Consolidated SWOT Analysis of Key Players
                                                                                                                                                                                                                                                                                                                                                                                                                  4. Company Profile
                                                                                                                                                                                                                                                                                                                                                                                                                    1. Drägerwerk AG & Co. KGaA
                                                                                                                                                                                                                                                                                                                                                                                                                      1. Business Overview
                                                                                                                                                                                                                                                                                                                                                                                                                      2. Financial Data
                                                                                                                                                                                                                                                                                                                                                                                                                      3. Key Product domains
                                                                                                                                                                                                                                                                                                                                                                                                                      4. Recent Developments
                                                                                                                                                                                                                                                                                                                                                                                                                    2. Poseidon Diving Systems AB
                                                                                                                                                                                                                                                                                                                                                                                                                    3. Apeks Diving
                                                                                                                                                                                                                                                                                                                                                                                                                    4. Interspiro AB
                                                                                                                                                                                                                                                                                                                                                                                                                    5. rEvo Rebreathers
                                                                                                                                                                                                                                                                                                                                                                                                                    6. KISS Rebreathers
                                                                                                                                                                                                                                                                                                                                                                                                                    7. Hollis Rebreathers
                                                                                                                                                                                                                                                                                                                                                                                                                    8. Ambient Pressure Diving Ltd.
                                                                                                                                                                                                                                                                                                                                                                                                                    9. Shearwater Research Inc.
                                                                                                                                                                                                                                                                                                                                                                                                                    10. Brownie’s Marine Group, Inc.