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

Story

Story

Director

Screenplay

Screenplay

Art Direction

Production Design

Original Music Composer

Producer

Producer

Director of Photography

Editor

Special Effects

Camera Operator

Special Effects

Special Effects

Sound Editor

Makeup Artist

Special Effects

Special Effects

Hairstylist

First Assistant Director

Conductor

Sound

Continuity

Production Manager

Wardrobe Master

Visual Effects