Man has finally conquered the ocean. America's first self-contained undersea laboratory is the pride of the nation, and expectations are high for an elaborate undersea mining operation. What wasn't expected was the inhabitants of an undiscovered world.
Movie tag line: "The ultimate underwater adventure!"
Production companies:
Character: Dobler
Character: Claire
Character: O'Neill
Character: Barbara
Character: Seaver
Character: Engel
Character: Chadwick
Character: Fernandez
Character: Shuttle commander
Character: Shuttle crewman
Character: Shuttle crewwoman
Character: Corporate executive (uncredited)