Full Credits
15 members

Richard Carlson
Dr. David Reed

Julie Adams
Kay Lawrence

Richard Denning
Dr. Mark Williams

Antonio Moreno
Dr. Carl Maia

Nestor Paiva
Captain Lucas

Whit Bissell
Dr. Edwin Thompson

Bernie Gozier
Zee
Henry A. Escalante
Chico

Ricou Browning
The Gill Man In Water (uncredited)

Art Gilmore
Narrator (voice) (uncredited)

Perry Lopez
Tomas (uncredited)
Sydney Mason
Dr. Matos (uncredited)

Rodd Redwing
Luis (uncredited)
James Miller
Old Man (uncredited)

Ben Chapman
The Gill Man On Land (uncredited)
46 members
Jack Arnold
Director
Russ Haverick
Assistant Director
Fred Frank
Assistant Director
Harry Essex
Screenplay
Arthur A. Ross
Screenplay
William Alland
Idea
Maurice Zimm
Story
William Alland
Producer
Foster Thompson
Unit Manager
William E. Snyder
Director of Photography
Everett Brown
Grip
Scotty Welbourne
Still Photographer
James Curtis Havens
Underwater Camera
Hans J. Salter
Original Music Composer
Henry Mancini
Original Music Composer
Herman Stein
Original Music Composer
Ethmer Roten
Musician
Ray Craddock
Sound Editor
Albert E. Kennedy
Sound Editor
Joe Lapis
Sound
Leslie I. Carey
Sound
Joseph Gershenson
Music Director
Hilyard M. Brown
Art Direction
Ray Jeffers
Set Decoration
Russell A. Gausman
Set Decoration
Bernard Herzbrun
Art Direction
Jack Kevan
Makeup Artist
Chris Mueller
Makeup Artist
Robert Hickman
Makeup Artist
Joan St. Oegger
Hairstylist
Bud Westmore
Makeup Artist
Milicent Patrick
Makeup Designer
E. Thomas Case
Makeup Artist
Rosemary Odell
Wardrobe Master
Milicent Patrick
Creature Design
Ted J. Kent
Editor
Jack N. Young
Stunts
James R. Wolfe
Driver
Gene Poole
Stunts
Ginger Stanley
Stunts
Al Wyatt Sr.
Stunts
Ted White
Stunts
Polly Burson
Stunt Double
Evan Baldwin
Special Effects
Robert Emmett Dolan
Additional Music
Milton Rosen
Additional Music