John Agar als Prof. Clete Ferguson | |
Lori Nelson als Helen Dobson | |
John Bromfield als Joe Hayes | |
Nestor Paiva als Captain Lucas | |
Grandon Rhodes als Jackson Foster | |
Dave Willock als Lou Gibson | |
Robert B. Williams als George Johnson | |
Charles Cane als Police Captain | |
Loretta Agar als Woman on Boat (uncredited) | |
Bill Baldwin als Patrol Boat Dispatcher (voice / uncredited) | |
Jere Beery als Photographer (uncredited) | |
Ricou Browning als The Gill Man (in water) / Lab Technician (uncredited) | |
Diane DeLaire als Miss Abbott (uncredited) | |
Mike Doyle als Cop (uncredited) | |
Clint Eastwood als Jennings (uncredited) | |
Jack Gargan als Skipper (uncredited) | |
Charles Gibb als Cop (uncredited) | |
Brett Halsey als Pete (uncredited) | |
Don C. Harvey als Mac - Spotlight Party Leader (uncredited) | |
Tom Hennesy als The Gill Man (on land) / Marineland Diver (uncredited) | |
Don House als Diver (uncredited) | |
Robert F. Hoy als Charlie (uncredited) | |
Ned Le Fevre als Newscaster (uncredited) | |
Sydney Mason als Police Announcer (uncredited) | |
Robert Nelson als Dr. McCuller (uncredited) | |
Patricia Powers als Girl in Convertible | |
Bert Stevens als Search Party Member (uncredited) | |
Charles Victor als Policeman (uncredited) | |
Robert Wehling als Joe (uncredited) | |
James R. Wolfe als Man at Tank (uncredited) |
Jack Arnold | Director |
Jack Kevan | Creature Design |
Scotty Welbourne | Director of Photography |
William Alland | Story |
Martin Berkeley | Screenplay |
Paul Weatherwax | Editor |
William Alland | Producer |
Alexander Golitzen | Art Direction |
Russell A. Gausman | Set Decoration |
William Lava | Original Music Composer |
Herman Stein | Original Music Composer |
Alfred Sweeney | Art Direction |
Julia Heron | Set Decoration |
Bud Westmore | Makeup Artist |
Jack A. Bolger, Jr. | Sound |
Leslie I. Carey | Sound |
Ben Hendricks | Sound Editor |
Albert E. Kennedy | Sound Editor |
Jay A. Morley Jr. | Costume Designer |
Joan St. Oegger | Hairstylist |
Edward Dodds | Unit Production Manager |
Fred Frank | Assistant Director |
Tom Hennesy | Stunts |
Don House | Stunts |
Bob Hoy | Stunts |
Ginger Stanley | Stunts |
Joseph Gershenson | Music Supervisor |
Henry Mancini | Music |
Milton Rosen | Music |
Ethmer Roten | Musician |
Hans J. Salter | Music |
Frank Skinner | Music |