Vic Powers

Lloyd Bridges

Ricardo Balboa

Nico Minardos

General Tovrea

Alex Montoya

Dr. Henry L. Carlyle

Shepperd Strudwick

Miguel Vegas

Oren Stevens

President Eduardo Delgado

Michael Ansara

Kathryn Carlyle

Joan Blackman

Maria

Marie Gomez

Reuben

Perry Lopez

Bink Binkenshpilder

Michael Walker

Larry Sedgewick

Barry Bartle

Jonah

Brock Peters

Mrs. Carlyle

Irene Dailey

Director

László Benedek

Story

Art Arthur

Screenplay

Andy White

Producer

Gene Levitt

Executive Producer

Ivan Tors

Original Music Composer

George Bruns

Director of Photography

Edmund Gibson

Editor

John B. Woelz

Art Direction

Bruce Bushman

Set Decoration

Don Ivy

Assistant Director

Gordon McLean

Underwater Camera

Lamar Boren