Jacques-Yves Cousteau known as Jacques Cousteau (11 June 1910 - 25 June 1997) was a French naval officer, explorer, ecologist, filmmaker, innovator, scientist, photographer, author and researcher who studied the sea and all forms of life in water. He helped create the aqua-lung, helped marine conservation and was a member of the Académie française. He was also known as "le Commandant Cousteau" or "Captain Cousteau".