A group of scientists travel to a remote island to study the effects of nuclear weapons tests, only to get stranded when their airplane mysteriously explodes. The team soon discovers that the tests have given rise to crabs mutated into intelligent, impervious, telepathic giants intent on increasing their numbers by breeding, then travelling to populated areas to feed, and which do not intend to be stopped by their discoverers.
as Dale Drewer
as Dr. Martha 'Marti' Hunter
as Hank Chapman
as Dr. Karl Weigand
as Jules Deveroux
as Dr. James Carson
as Seaman Ron Fellows
as Seaman Jack Sommers
as Ensign Quinlan
as Seaman Mac, wears sunglasses
as Diving-double for male cast
as Diving-double for Pamela Duncan
