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| Sports, Scuba diving, Underwater Sports. Scuba diving is heavily reliant on technology to be successful, and the first development of the idea of scuba was developed by Alexander Lodygin many years before the term appeared. The first commercially successful scuba sets were the Aqualung open-circuit units developed by Emile Gagnan and Jacques-Yves Cousteau, in which compressed gas (usually air) is inhaled from a tank and then exhaled into the water, and the descendants of these systems are still the most popular units today. |