''Jacques Cousteau submarine

Answer 1

Jacques Cousteau, the renowned French explorer and marine conservationist, co-invented the Aqua-Lung and utilized submarines for ocean exploration. His most famous vessel, the Calypso, was a converted minesweeper that served as a floating laboratory for marine research and filmmaking. Cousteau's work aboard the Calypso helped raise awareness about marine life and the importance of ocean conservation. His pioneering efforts in underwater exploration continue to inspire generations to appreciate and protect the oceans.