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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.
L. Sprague de Camp's 1938 short story "The Merman" hinges on an experimental process to make lungs function as gills, thus allowing a human being to "breathe" under water. Hal Clement's 1973 novel Ocean on Top portrays a small underwater civilization living in a 'bubble' of oxygenated fluid denser than seawater.
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 ...
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 ...
They spend most of their time underwater, so must be able to hold their breath for long periods to avoid frequent surfacing. Dive duration largely depends on the activity. A foraging sea turtle may typically spend 5–40 minutes under water [108] while a sleeping sea turtle can remain underwater for 4–7 hours.
Father with baby getting used to a swimming pool Baby submerged, instinctively holding his breath underwater. Infant swimming is the phenomenon of human babies and toddlers reflexively moving themselves through water and changing their rate of respiration and heart rate in response to being submerged.
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.
Others may breathe atmospheric air while remaining submerged, via breathing tubes or trapped air bubbles, though some aquatic insects may remain submerged indefinitely and respire using a plastron. A number of insects have an aquatic juvenile phase and an adult phase on land. In these case adaptions for life in water are lost at the final ecdysis