Photograph by Luis Marden
Legendary French oceanographer Jacques Cousteau examines a school of fish swimming past coral in the Indian Ocean. Together, Cousteau and photographer Marden pioneered the field of ocean exploration and photography. In 1956, Marden accompanied the legendary ocean explorer on a voyage from Toulon, France, to the Suez Canal aboard Cousteau's ship, Calypso. By journey’s end, Marden had 1,200 photographs, the largest collection of underwater color photographs ever taken.