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The Crab Monsters are the main antagonists of the 1957 American horror film Attack of the Crab Monsters.

Affected by deadly radiation from the Castle Bravo nuclear tests at Bikini Atoll, these once-normal crabs have mutated into gigantic killers with psychic abilities.


The Crab Monsters are gigantic red crabs with thin antennae, abnormally long forearms, and large squinting human eyes.

Powers and Abilities

The Crab Monsters possess the following powers and abilities:

  • Claws
  • Regeneration
  • Heatwave generation
  • Earthquake manipulation
  • Memory absorption
  • Telepathy


The last of the giant crabs are killed when an electrically charged broadcasting tower is knocked into the water, electrocuting them.


  • The film was directed by Roger Corman, the director of Sharktopus.

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