Jacques-Yves Cousteau (11 June 1910 - 25 June 1997) was a French naval officer, explorer, ecologist, filmmaker, scientist, photographer and researcher who studied the sea and all forms of life in water. He co-developed the aqua-lung, pioneered marine conservation and was a member of the Académie française. He is generally known in France as le commandant Cousteau ("Commander Cousteau"). Worldwide, he was commonly known as Jacques Cousteau or Captain Cousteau.
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