http://swissbaync5d7ykaz7dh7v4qjrb4gmen5aj3bogxrcgbb43ij34bjuyd.onion/pdf/Books/Survival/Medicine/oddsnends.htm
Deepest Dives on Compressed Air For many years the record for deepest dive on compressed air was the October 14, 1968
dive by John J. Gruener and R. Neal Watson, to 437 feet off Freeport, Grand Bahama Island.
On February 14, 1990 Bret Gilliam dove 452 feet off the coast of Honduras (Roatan).