Illustrated with big, clear black and white photographs together with clear drawings and diagrams, this record of the dives with the Cousteau Diving Saucer is a visual and textual treat for boys fascinated with the underwater world. The famous deep-sea explorer loaned his tough little sub to the U.S. Navy in 1964 to use in research. The pressures the saucer's design has been built to withstand, its maneuver- ability, its built-in movie camera, and its crane-like arms for undersea collecting are thoroughly described. There are samples of its log kept on a tape recorder during each dive and a description of the procedures of its recovery after each submergence.