Peter Benchley, who wrote Jaws, also wrote The Deep. Scuba divers David Sanders and Gail Berke (Nick Nolte and Jacqueline Bisset), assisted by Romer Treece (Robert Shaw), discover a sunken treasure off the Bermuda coast. They also find a stash of narcotics. David and Gail spend the rest of the picture avoiding bad guys who stashed the drugs and want the treasure as well.