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 to the Académie française, chair 17, succeeding Jean Delay. His official reception under the cupola took place on 22 June 1989, the response to his speech of reception being given by Bertrand Poirot-Delpech. After his death, he was replaced by Érik Orsenna on 28 May 1998. In June 1990, the composer Jean Michel Jarre paid homage to the commander by entitling his new album "Waiting for Cousteau". He also composed the music for Cousteau's documentary "Palawan, the last refuge". On 2 December 1990, his wife Simone Cousteau died of cancer. In June 1991, in Paris, Jacques-Yves Cousteau remarried, to Francine