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
Vintage scuba Vintage scuba Vintage scuba is a reference to the art of scuba diving using vintage-style gear, which is generally defined at this time as equipment dating from 1975 and earlier, and to that equipment. The most striking and well recognized example of vintage scuba gear is the twin-hose or double hose regulator, a popular style of regulator since Jacques-Yves Cousteau and Emile Gagnan pioneered the first such design, the C45 Scaphandre Autonome, which was marketed in the USA (along with a tank and harness) as the Aqua-Lung. At present, there is a renewed interest in the care and use of