Horror Sci-Fi
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.
Directed by
Jack Arnold
Clint Eastwood
Jennings (uncredited)
John Agar
Prof. Clete Ferguson
Brett Halsey
Pete (uncredited)
Bill Baldwin
Patrol Boat Dispatcher (voice / uncredited)
Nestor Paiva
Captain Lucas
Lori Nelson
Helen Dobson
Grandon Rhodes
Jackson Foster
Dave Willock
Lou Gibson
John Bromfield
Joe Hayes
Bert Stevens
Search Party Member (uncredited)
Robert F. Hoy
Charlie (uncredited)
Don C. Harvey
Mac - Spotlight Party Leader (uncredited)
Robert B. Williams
George Johnson
Diane DeLaire
Miss Abbott (uncredited)
Charles Cane
Police Captain
Loretta Agar
Woman on Boat (uncredited)
Jere Beery
Photographer (uncredited)
Ricou Browning
The Gill Man (in water) / Lab Technician (uncredited)
Mike Doyle
Cop (uncredited)
Jack Gargan
Skipper (uncredited)
Charles Gibb
Cop (uncredited)
Tom Hennesy
The Gill Man (on land) / Marineland Diver (uncredited)
Don House
Diver (uncredited)
Ned Le Fevre
Newscaster (uncredited)
Sydney Mason
Police Announcer (uncredited)
Patricia Powers
Girl in Convertible
Charles Victor
Policeman (uncredited)
Robert Wehling
Joe (uncredited)

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