Solo diving II. In the late 1940s, after the invention of the Aqua-lung by Cousteau and Gagnan, the first retail underwater breathing apparatus for sport was commercially marketed. As the sport expanded through the 1950s, several sporting organisations – notably the Young Men's Christian Association (YMCA) – began scuba training programmes for swimming enthusiasts, thus began the codification of what was believed to be proper practices for the expanding amateur sport of scuba diving. The buddy system was thought to be a useful corollary to the "never swim alone" edicts of the YMCA swimming and lifesaving programmes. Cousteau independently implemented a buddy
Céline Cousteau Céline Cousteau Céline S. Cousteau (born June 6, 1972) is a socio-environmental advocate and public figure. She is known for her work as documentary film director, producer, explorer, artist, public speaker, brand ambassador and designer. She is the Founder/Director of CauseCentric Productions and Co-Founder/ Chairman of the Board of the Céline Cousteau Film Fellowship. Céline is the daughter of ocean explorer and filmmaker Jean-Michel Cousteau and granddaughter of Jacques Yves Cousteau. Cousteau was born in California to Jean-Michel Cousteau, a renowned documentary-maker and environmental advocate, and Anne-Marie Cousteau, a former expedition photographer. She is the sister of Fabien Cousteau, an