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The self-contained amphibious underwater Calypso 35mm film camera was conceived by the marine explorer Jacques Cousteau (1910–1997), designed by Jean de Wouters and manufactured by Atoms in France. It was distributed by La Spirotechnique in Paris from 1960. The camera is rated to operate down to 60 m (200 ft) below sea level.
A snorkel is used to allow the user to breathe atmospheric air when their face is immersed in water while swimming or floating at the surface. [1] To work effectively, the snorkel must allow the user to inhale and exhale comfortably over an extended period, and provide a sufficient volume of air with appropriate oxygen and carbon dioxide content to maintain a sufficient and comfortable ...
These factors make a slow and deep breathing cycle more energy efficient and more effective at carbon dioxide elimination. Part of the skill of diving is learning to relax under water and breathe more slowly and deeply, while minimizing exertion, by learning good buoyancy, trim, maneuvering, and propulsion skills.
The Oscar-nominated actor narrowly escaped a life-or-death situation when recreating the true story of the 2018 Tham Luang cave rescue.
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The increasing use of digital cameras has reduced the learning curve of underwater flash significantly, since the user can instantly review photos and make adjustments. Color is absorbed as it travels through water, so that the deeper the observer, the less reds, oranges and yellow colors remain. The strobe replaces that color.
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