Deepest submersible dive [Ocean]

Last updated: June 4, 2018 at 12:20 pm

10,916 m (35,814 ft) — Bathyscaphe Trieste (Project Nekton) | January 23, 1960, | Challenger Deep (Mariana Trench), Guam. Hydrostatic pressure: 16,000 PSI (1,089 ATM). Occupants: Dr. Jacques Piccard (Switzerland), Lt. Donald Walsh, USN. The deepest known point on earth is 10,994 m (36,070 ft) (Also in the Challenger Deep). During their short time on the sea floor, Dr. Jacques Piccard sighted what appeared to be a flounder, thus documenting the deepest fish ever observed.

Piccard, Jacques and Dietz, Robert S. 1961. Seven Miles Down; The Story of the Bathyscaph Trieste. G. T. Putnam’s Sons.
U.S. Navy Office of Naval Research

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