IMDb5.7Play trailerPlay trailerThe biggest thing since creation!The Giant Behemoth·1959·1h 20m·NR·Science Fiction, HorrorMarine atomic tests cause changes in the ocean's ecosystem resulting in dangerous blobs of radiation and the resurrection of a dormant dinosaur which threatens London.Mark as watchedTop castView moreGene EvansSteve KarnesAndré MorellProf. James BickfordLeigh MadisonJean TrevethanJohn TurnerJohnAlastair HunterDr. C. A. Morris, the village doctorLloyd LambleSenior Admiral, at the AdmiraltyJack MacGowranDr. Sampson, the paleontologistMaurice KaufmannMini Submarine OfficerMore like thisIMDb0.0X: The UnknownMovie · 1956