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
Jacques Cousteau National Estuarine Research Reserve On October 20, 1997 the Jacques Cousteau National Estuarine Research Reserve (JC NERR) was dedicated in honor of Jacques Cousteau. The JC NERR is one of 26 National Estuarine Research Reserve (NERR) created to promote responsible use and management of our nation's estuaries. Estuaries, where the rivers meet the sea, are the wide lower course of a river where its current is met by the tides. This mix of fresh and salt water creates a unique and very productive ecosystem vital to life both on land and in the sea. The mission of the Jacques Cousteau National Estuarine Research Reserve