Steve Karnes
Prof. James Bickford
Jean Trevethan
John
Dr. C. A. Morris, the village doctor
Senior Admiral, at the Admiralty
Dr. Sampson, the paleontologist
Mini Submarine Officer
Tom Trevethan
Photo Lab Aide
Naval Commader, at the "Valkyrie" wreck (uncredited)
Dialogue Scientist at Conference (bit)
Story
Story
Director
Screenplay
Art Direction
Production Design
Original Music Composer
Producer
Producer
Director of Photography
Editor
Special Effects
