Summary: A nuclear detonation in the Atlantic re-animates a prehistoric sea monster. The creature terrorizes the Spanish coastline, attacking swimmers, boats and lighthouses without mercy. A sea captain whose ship was sunk by the monster and an American tourist whose best friend was killed by the beast team up to stop the monster, along with the help of respected oceanographer (Ray Milland). (imdb)

AKA: Hydra-Monster of the Deep

Genres: Adventure, Horror

Country: Spain

Directed By: Amando de Ossorio

Written By: Amando de Ossorio

Starring: Ray Milland, Timothy Bottoms, Taryn Power, Jack Taylor, José Canalejas, León Klimovsky, Jared Martin, Gérard Tichy, Carole James

More information at the Internet Movie Database