Jacques-Yves Cousteau was a French naval officer, explorer, conservationist, filmmaker, innovator, scientist, photographer, author 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 French Academy. Cousteau described his underwater world research in series of books, perhaps most successful being his first book, The Silent World: A Story of Undersea Discovery and Adventure, published in 1953. He also directed films, most notably the documentary adaptation of the book, The Silent World, which won a Palme d’or at the 1956 Cannes Film Festival. Cousteau was born on June 11, 1910 and died on June 25, 1997.