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)
Robert B. Williams
George Johnson
Ricou Browning
The Gill Man (in water) / Lab Technician (uncredited)
John Agar
Prof. Clete Ferguson
Brett Halsey
Pete (uncredited)
Diane DeLaire
Miss Abbott (uncredited)
Bert Stevens
Search Party Member (uncredited)
Bill Baldwin
Patrol Boat Dispatcher (voice / uncredited)
Nestor Paiva
Captain Lucas
Lori Nelson
Helen Dobson
Dave Willock
Lou Gibson
Robert F. Hoy
Charlie (uncredited)
Charles Cane
Police Captain
Grandon Rhodes
Jackson Foster
John Bromfield
Joe Hayes
Don C. Harvey
Mac - Spotlight Party Leader (uncredited)
Loretta Agar
Woman on Boat (uncredited)
Jere Beery
Photographer (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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