The Rift (1990)

A man steps out of a park fountain in Ho Chi Minh City with no recollection of who he is or where he came from. As he wanders through the city, piecing together clues to his past, he is relentlessly pursued by mysterious figures.

Two crew members wake up on an abandoned spacecraft with no idea who they are, how long they've been asleep, or what their mission is. The two soon discover they're actually not alone – and the reality of their situation is more horrifying than they could have imagined.

A group of old college friends reunite on a Caribbean scuba diving trip exploring the wreckage of a WWII battleship and find themselves trapped inside the underwater labyrinth of rusted metal surrounded by great white sharks.

Chaank Armaments is experimenting with the ultimate fighting machine which is part human - part machine. So far, the Hardman project has been unreliable and has killed a number of innocent people. The genius behind this project is Jack who lives in a world of models, toys and magazines. When he is fired by Cale for killing a few corporate officers, he unleashes the ultimate killing machine called the 'Warbeast' against Cale and those who would help her.

In the dark silence of the sea during World War II, the submarine USS Tiger Shark prowls on what should be a routine rescue mission. But for the shell-shocked crew, trapped together in the sub's narrow corridors and constricted spaces, this is about to become a journey into the sensory delusions, mental deceptions and runaway fears that lurk just below the surface of the ocean.

When an unknown disease wipes out most of the world’s population, a man with unique blood is isolated for study. Fearing for his wife’s safety, he breaks his quarantine – into a world overrun by monstrous Infected and a shadowy agency hunting them down.

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 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.

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.

When an alien prison ship crash lands and unleashes creature after creature in the California desert, they make quick work of the army that tries to stop them. Now, the only hope of stopping the aliens rests with a secret branch of the government specializing in alien weaponry. But with the team untested in actual combat, the battle for Earth will be brutal.