In a tributary of the Amazon, a monster – half-man, half-fish – is captured and placed in a reservoir in a Florida national park to be observed by scientists.
John Agar
Prof. Clete Ferguson
Lori Nelson
Helen Dobson
John Bromfield
Joe Hayes
Nestor Paiva
Captain Lucas
Grandon Rhodes
Jackson Foster
Dave Willock
Lou Gibson
Robert B. Williams
George Johnson
Charles Cane
Police Captain
Loretta Agar
Woman on Boat (uncredited)
Bill Baldwin
Patrol Boat Dispatcher (voice / uncredited)
Jere Beery
Photographer (uncredited)
Ricou Browning
The Gill Man (in water) / Lab Technician (uncredited)
Diane DeLaire
Miss Abbott (uncredited)
Mike Doyle
Cop (uncredited)
Clint Eastwood
Jennings (uncredited)
Jack Gargan
Skipper (uncredited)
Charles Gibb
Brett Halsey
Pete (uncredited)
Don C. Harvey
Mac - Spotlight Party Leader (uncredited)
Tom Hennesy
The Gill Man (on land) / Marineland Diver (uncredited)
Don House
Diver (uncredited)
Robert F. Hoy
Charlie (uncredited)
Ned Le Fevre
Newscaster (uncredited)
Sydney Mason
Police Announcer (uncredited)
Robert Nelson
Dr. McCuller (uncredited)
Patricia Powers
Girl in Convertible
Bert Stevens
Search Party Member (uncredited)
Charles Victor
Policeman (uncredited)
Robert Wehling
Joe (uncredited)
James R. Wolfe
Man at Tank (uncredited)
Jack Arnold
Director
William Alland
Producer
Invalid Date
Dec 14, 1984
Jun 25, 1982
Jul 27, 2006
Mar 23, 2007
Aug 21, 1981
May 20, 1998
Feb 12, 2021
Mar 5, 1954
Jan 8, 2020
Aug 9, 2018
May 29, 2019
Aug 2, 2023
Dec 5, 1972
Dec 23, 1932
Mar 2, 2023
Universal Pictures
US
Universal International Pictures
United States
English