Jacques Piccard Scientist

Jacques Piccard (28 July 1922 – 1 November 2008) was a Swiss oceanographer and engineer, known for having developed underwater vehicles for studying ocean currents. He and Lt. Don Walsh of the United States Navy were the first people to explore the deepest part of the world's ocean, and the deepest location on the surface of the Earth's crust, the Challenger Deep, in the Mariana Trench located in the western North Pacific Ocean.