During the Cuban missile crisis in 1962, a Russian submarine strays into American waters. On board is a nuclear cargo destined for Castro. The Americans attack and destroy the sub. 38 years later US submarine Roosevelt is in the same waters. An unknown object attacks and disables the sub with devastating force and drags the vessel to the bottom of the ocean. What lies on the ocean bed beggars belief: dozens of wrecks, among them the sub destroyed 38 years ago. Whatever was on board has fed a creature of unbelievable size and strength! The only way out is the emergency submersible and a passing cruise ship. Above or below the water, there is no escape from the monster mutant octopus with a nuclear diet...

Follows best friends Maddie and Trish as they find themselves trapped in a remote lagoon with the dangerous killer whale named Ceto.

When the cable breaks on their diving bell four people find themselves trapped in a hidden underwater world.

The U.S. Navy's special group "Blue Water" builds a half-shark, half-octopus for combat. But the sharktopus escapes and terrorizes the beaches of Puerto Vallarta.

Two Octopi fight for their lives with a stubborn restaurant cook in a comical escape through the streets of a small Greek village.

After young Kirra leaves her Australian home to summer with her grandfather in South Africa, she soon discovers a baby orca stranded in the lagoon near her grandfather’s rundown seaside amusement park. She names the lonely whale Willy--and embarks on a great quest to lead the little guy back to his anxious pod.

A young sailor falls in love with a mysterious woman performing as a mermaid on the local pier. As they become entwined, he comes to suspect the woman might be a real mermaid who lures men to a watery death during the full moon. Preserved by the Academy Film Archive in partnership with The Film Foundation in 2007.

A boating accident off the coast of Spain sends Paul and his girlfriend Barbara to the decrepit fishing village of Imboca. As night falls, people start to disappear and things not quite human start to appear. Paul is pursued by the entire town. Running for his life, he uncovers Imboca's secret..they worship Dagon, a monstrous god of the sea...and Dagon's unholy offspring are on the loose...

A marine biologist, a dolphin trainer, a research scientist, and a local sheriff try to hunt down a large sea monster, a shark/octopus hybrid, that is devouring swimmers and fishermen off a south Florida coast.

Popeye is a super-strong, spinach-scarfing sailor man who's searching for his father. During a storm that wrecks his ship, Popeye washes ashore and winds up rooming at the Oyl household, where he meets Olive. Before he can win her heart, he must first contend with Olive's fiancé, Bluto.

After witnessing the killing of his mate and offspring at the hands of a reckless Irish captain, a vengeful killer whale rampages through the fisherman's Newfoundland harbor. Under pressure from the villagers, the captain, a female marine biologist, and an Indigenous tribalist venture after the great beast, who will meet them on its own turf.

Skipper, Kowalski, Rico and Private join forces with undercover organization The North Wind to stop the villainous Dr. Octavius Brine from destroying the world as we know it.