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)

Scientist at Conference (uncredited)

TV Newscaster (uncredited)

Man Listening to Car Radio (uncredited)

PLA Radio Operator (uncredited)

Dr. Sampson's Helicopter Pilot (uncredited)

French Radio Officer (uncredited)

The Radar Operator, at the radar room (uncredited)

Naval Officer in Situation Room (uncredited)

Director

Director

Screenplay

Screenplay

Story

Story

Producer

Producer

Original Music Composer

Director of Photography

Editor

Production Design

Art Direction

Special Effects

Special Effects

Special Effects

Special Effects

Special Effects

Camera Operator

Sound Editor

Hairstylist

Makeup Artist

First Assistant Director

Production Manager

Continuity

Sound

Wardrobe Master

Conductor

Visual Effects