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
Philippe Tailliez hundred dives, gradually going to deeper depths. These three divers would become known as the three "mousquemers" (musketeers of the sea). The Second World War separated their team temporarily and Tailliez in particular would take part at the time of the campaign in Syria, with naval action against the Vichy navy. On armistice leave and thus having time, in 1942 they made without breathing apparatus the first French underwater film: "Par dix-huit mètres de fond" (= "18 meters deep"), and the next year "Epaves" (= "Wrecks"), this time with the Cousteau-Gagnan aqualung, and with the funds of the Marseilles company