The panel features numerous characters; some recurring faces are Dottie and Will Farrington, the neighborhood skipping aficionados, Millie, who earnestly lectures the naughty person inside herself, and Scooter, the dog who loves to take baths, but only with his scuba gear.
In scuba diving, an overhead environment is a situation where there is no open water overhead, and thus the diver in an emergency cannot escape upwards to atmosphere if his breathing set malfunctions.
After having travelled to England and discovered William James' invention, the French physician Manuel Théodore Guillaumet, from Argentan (Normandy), patented in 1838 the oldest known regulator mechanism.
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Some diver training organizations and groups of divers teach techniques, such as DIR diving for configuring diving equipment.
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To sell his regulator in English-speaking countries Cousteau coined the Aqua-Lung label, which was first licensed to the U.S. Divers company (the American division of Air Liquide in the USA) and later sold alongside with La Spirotechnique and U.S. Divers to finally constitute the name of the company itself, Aqua-Lung/La Spirotechnique, nowadays sited in Carros, near Nice.
Ib Hoffman relates the story of how his son Benj, at the age of thirteen, designed and built SCUBA equipment, carefully calculating all the parameters, only to come close to dying on his first dive because he lacked a crucial piece of information about the physiology of breathing, one which all his knowledge of physics and engineering could not have predicted.
During the dive, Marcia swims too deep and is overcome with the "raptures of the deep," temporarily losing her mind and insisting on removing all her scuba gear.
Trainees become combat divers, learning to use scuba and closed circuit diving equipment to covertly infiltrate denied areas.
Scuba diving | Set the Controls for the Heart of the Sun | Set | Go-Set | Set (mythology) | Scuba set | scuba diving | Erector Set | SCUBA | Mandelbrot set | Do Not Adjust Your Set | XML Information Set | The World Set Free | The Vanity Set | The Ready Set | The Death Set | television set | set | scuba | Murder-Set-Pieces | I Set My Friends on Fire | Desk Set | Universal Character Set | The Smart Set | The Alan Bown Set | Tee Set | SET Max | set list | Set It Off | Set construction |