Leviathan (1989)

A group of heavily armed hijackers board a luxury ocean liner in the South Pacific Ocean to loot it, only to do battle with a series of large-sized, tentacled, man-eating sea creatures who have taken over the ship first.

Jenn has washed ashore a small tropical island and it doesn’t take her long to realize she’s completely alone. She must spend her days not only surviving the elements, but must also fend off the malevolent force that comes out each night.

Researchers on the undersea lab Aquatica have genetically altered the brains of captive sharks to develop a cure for Alzheimer's disease. But there's an unexpected side effect: the sharks got smarter, faster, and more dangerous. After a big storm damages their remote research facility, they must fight for their lives.

A pair of young vacationers are involved in a dangerous conflict with treasure hunters when they discover a way into a deadly wreck in Bermuda waters.

A spacecraft is discovered at the bottom of the Pacific Ocean, presumed to be at least 300 years old and of alien origin. A crack team of scientists and experts is assembled and taken to the ocean floor to investigate. However, the ship is not as it seems and when a giant perfect sphere is discovered in the cargo bay, things begin to fall apart.

Post-apocalyptic survivors find refuge in the Rocky Mountains to hide from giant, insect-like creatures that can't live above 8,000 feet. However, when one of them needs life-saving supplies, they risk it all to venture into the danger zone.

The stars are gone. The planets have disappeared. Only individuals aboard space stations or starships were left to give the end a name -- The Quiet Rapture. After decades of decay and crumbling infrastructure, the Consolidation of Iron has made a discovery on a barren moon designated AT-5. An ocean of blood. Hoping to discover desperately needed resources they immediately launch an expedition. A submarine is crafted and a convict is welded inside. Due to the pressure and depth of the ocean the forward viewport has been encased in metal. If successful, they will earn their freedom. If not, another will follow. This will be the 13th expedition.

Stranded in the open sea after a fatal accident, a young woman and her two friends are rescued by a fishing vessel's captain, unaware that the ship harbors a chilling secret.

In 2047, a group of astronauts are sent to investigate and salvage the starship Event Horizon which disappeared mysteriously seven years before on its maiden voyage. However, it soon becomes evident that something sinister resides in its corridors.

When they take some friends on an extreme sport adventure, the last thing Jared and Sam expect to see below the shark-infested waters is a legendary pirate ship rumored to contain millions of dollars in gold. But their good fortune is short-lived, as a ruthless gang of criminals gets word of what they have uncovered.