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  2. Rebreather diving - Wikipedia

    en.wikipedia.org/wiki/Rebreather_diving

    Very long or deep dives using open circuit scuba equipment may not be feasible as there are limits to the number and weight of diving cylinders the diver can carry. The economy of gas consumption of a rebreather is also useful when the gas mix being breathed contains expensive gases, such as helium.

  3. Physiology of underwater diving - Wikipedia

    en.wikipedia.org/wiki/Physiology_of_underwater...

    The physiology of underwater diving is the physiological adaptations to diving of air-breathing vertebrates that have returned to the ocean from terrestrial lineages. They are a diverse group that include sea snakes, sea turtles, the marine iguana, saltwater crocodiles, penguins, pinnipeds, cetaceans, sea otters, manatees and dugongs.

  4. Human physiology of underwater diving - Wikipedia

    en.wikipedia.org/wiki/Human_physiology_of...

    Human physiology of underwater diving is the physiological influences of the underwater environment on the human diver, and adaptations to operating underwater, both during breath-hold dives and while breathing at ambient pressure from a suitable breathing gas supply.

  5. How Long Can Humans Hold Their Breath?

    www.aol.com/news/long-humans-hold-breath...

    Humans set breath-holding records in water because they "can hold their breath twice as long underwater they can on land." The world record is 19 minutes and 30 seconds. It depends--but you can ...

  6. Static apnea - Wikipedia

    en.wikipedia.org/wiki/Static_apnea

    Static apnea (STA) is a discipline in which a person holds their breath underwater for as long as possible, and need not swim any distance. [1] Static apnea is defined by the International Association for Development of Apnea (AIDA International) and is distinguished from the Guinness World Record for breath holding underwater, which allows the ...

  7. Rebreather - Wikipedia

    en.wikipedia.org/wiki/Rebreather

    Submarines, underwater habitats, bomb shelters, space stations, and other living spaces occupied by several people over medium to long periods on a limited gas supply, are equivalent to closed circuit rebreathers in principle, but generally rely on mechanical circulation of breathing gas through the scrubbers.

  8. Diving rebreather - Wikipedia

    en.wikipedia.org/wiki/Diving_rebreather

    A Diving rebreather is an underwater breathing apparatus that absorbs the carbon dioxide of a diver's exhaled breath to permit the rebreathing (recycling) of the substantially unused oxygen content, and unused inert content when present, of each breath. Oxygen is added to replenish the amount metabolised by the diver.

  9. Kate Winslet Reveals Process Behind Holding Her Breath For 7 ...

    www.aol.com/entertainment/kate-winslet-reveals...

    Kate Winslet, who held her breath underwater for 7 minutes and 14 seconds while filming "Avatar: The Way of Water," said the feat involved both physical and mental conditioning.

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