Jacques Cousteau and Pierre-Antoine was released in 1954. During the 1940s, Cousteau is credited with improving the aqua-lung design which gave birth to the open-circuit scuba technology used today. According to his first book, "" (1953), Cousteau started diving with Fernez goggles in 1936, and in 1939 used the self-contained underwater breathing apparatus invented in 1926 by Commander Yves le Prieur. Cousteau was not satisfied with the length of time he could spend underwater with the Le Prieur apparatus so he improved it to extend underwater duration by adding a demand regulator, invented in 1942 by Émile Gagnan. In 1943 Cousteau tried
Fabien Cousteau Fabien Cousteau Fabien Cousteau (born 2 October 1967) is an aquanaut, ocean conservationist, and documentary filmmaker. As the first grandson of Jacques-Yves Cousteau, Fabien spent his early years aboard his grandfather’s ships Calypso and Alcyone; learning how to scuba dive on his fourth birthday. From 2000–2002, Fabien was an Explorer-at-Large for National Geographic and collaborated on a TV special aimed at changing public conceptions about sharks called "Attack of the Mystery Shark". Then in 2003–2006, he produced the documentary "" that aired on CBS. With the help of a large crew, Fabien created a 14-foot, 1,200-pound, lifelike shark submarine called