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Attack of the Crab Monsters is a 1957 American black-and-white science fiction-horror film, produced and directed by Roger Corman (via his Los Altos Productions), that stars Richard Garland, Pamela Duncan, and Russell Johnson. The film was distributed by Allied Artists as a double feature with another Corman feature, Not of This Earth.
- Richard Garland as Dale Drewer
- Pamela Duncan as Martha Hunter
- Russell Johnson as Hank Chapman
- Leslie Bradley as Dr. Karl Weigand
- Mel Welles as Jules Deveroux
- Richard H. Cutting as Dr. James Carson
- Beach Dickerson as Seaman Ron Fellows
- Tony Miller as Seaman Jack Sommers