- HD 1080
- Runtime: 71m.
- Status: Released
- 1
- Languages: en
- Country: United States of America
- Director: Irvin Berwick
- Stars: Les Tremayne, Forrest Lewis, John Harmon, Frank Arvidson, Jeanne Carmen
- keywords: monster, lighthouse, lighthouse keeper, fishman
- Production_studio: Vanwick Productions, Filmservice Distributors Corporation
- Slogan: HE PREYS ON HUMAN FLESH!
- providers: FlixFling
- The The Monster of Piedras Blancas is featured in the top rankings of 1959
- #18 in Top Horror Movies of 1959
An old lighthouse keeper who lives with his daughter secretly keeps a prehistoric fish-man by feeding it scraps and fish. One day he misses the feeding and all hell breaks loose.