Deep Waters The record for the deepest free dive is held by Jacques Mayol. He dove to an astounding depth of 282 feet without any breathing equipment. The deepest spot on Earth, Challenger Deep, is 35,802 feet (11,034 m) deep. It is found in the Mariana Trench, one of the many deep valleys of the Pacific Ocean. The pressure here is over 8 tons per square inch. Movie director James Cameron