Porpoise (scuba gear) Porpoises still exist. Only a few of these early models are known today, the rarest being the CA-2, made for use with two tanks. Porpoise (scuba gear) Porpoise is a tradename for scuba developed by Ted Eldred in Australia and made there from the late 1940s onwards. The first Porpoise was a closed circuit oxygen rebreather, and the following models were all single hose open circuit regulators. This rebreather was developed by Ted Eldred in the late 1940s and early 1950s. Some were made and used for sport diving, but they did not go into full production. It was worn
Aqua Lung America Aqua Lung America Aqua Lung America (formerly U.S. Divers Company) is an American company based in Vista, California which makes scuba equipment. The company is a division of Aqua Lung International, which was, for most of its existence, a division of Air Liquide. Aqua Lung International was sold by Air Liquide to Montagu Private Equity by the end of 2016. After U.S. Divers Company was renamed Aqua Lung America, the name U.S. Divers was retained as a trademark for Aqua Lung's line of snorkelling equipment. The "Aqua-Lung" regulator was created by Jacques-Yves Cousteau and Émile Gagnan in 1943. In 1946,