When scientists exploring the Amazon River stumble on a “missing link” connecting humans and fish, they plan to capture it for later study. But the Creature has plans of his own, and has set his sights on the lead scientist's beautiful fiancée, Kay.
A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
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.
After Air Force One goes down during a storm over the Bermuda Triangle, the United States Navy is dispatched to find the escape pod holding the President. A giant monster beneath the ocean awakens and attacks the fleet.
A Marine Biologist is assigned to investigate the mysterious deaths of some marine life in an inland salt water lake that has been attributed to a creature thought to have been the stuff of a legend.
An American scientist up to no good (as usual) by creating the half-pterodactyl, half-barracuda: Pteracuda. When the creature inevitably escapes, it's up to Sharktopus to stop him.
Little coastal town is being terrorized by deadly Barracudas.
Searching for the lost world of Atlantis, Prof. Aitken, his son Charles and Greg Collinson are betrayed by the crew of their expedition's ship, attracted by the fabulous treasures of Atlantis. The diving bell disabled, a deep sea monster attacks the boat. They are all dragged to the bottom of the sea where they meet the inhabitants of the lost continent, an advanced alien race that makes sailors their slaves.
After their prison ship sinks in the Caribbean, a group of prisoners and a doctor wash ashore on a seemingly deserted island. They soon discover a strange couple, who invite them to stay at their house. While the prisoners plan an escape, the doctor does some investigating, and soon finds out just what the pair are really doing, and why the prisoners keep disappearing mysteriously.
In a tributary of the Amazon, a monster – half-man, half-fish – is captured and placed in a reservoir in a Florida national park to be observed by scientists.
Scientists surgically transform the Creature into an air-breather, but being able to live on land is not enough to make him comfortable with humans. Enraged, he turns his wrath on anyone who comes near as he desperately tries to return to the deep-water world where he truly belongs.
Underwater deep-sea miners encounter a Soviet wreck and bring back a dangerous cargo to their base on the ocean floor with horrifying results. The crew of the mining base must fight to survive against a genetic mutation that hunts them down one by one.
Present-day survivors of a sunken naval vessel capture a Russian sub, only to find themselves stranded on an island filled with deadly, prehistoric creatures
The crew of a West of Ireland trawler—marooned at sea—struggle for their lives against a growing parasite in their water supply.
Lord Doom, evil master of Proyas, the Dark Planet, sends Kraa the Sea Monster to Earth as part of his plan to dominate the galaxy. To keep the meddling hands of the Planet Patrol out of his scheme, he incapacitates their nearby space station. Fortunately, the alien agent Mogyar is on hand to land on Earth to stop the giant sea-beast. Accidentally landing in New Jersey rather than Italy (where scientists could have helped Mogyar build a weapon to stop Kraa), Mogyar must overcome his stereotypical Italian accent and strange appearance in order to ally with nearby humans to save the day.
Doctor Rick is a scientist who has accidentally given one of his patients a radioactive substance named The W.E.N. Now Doctor Rick and his associate, Doctor Brown, have to save the city from The WEN's destruction. Meanwhile a man named, Frank, encounters The WEN and crosses paths with Doctor Rick and Doctor Brown.
Teens on a camping trip find the old road to a boat ramp has been mysteriously removed. They trek through the woods until they find where the road picks up again. When they get to the end of the line they find a nuclear power plant now stands in the once pristine wetlands. They boat out to their island campsite. Strange and mysterious things begin to happen as one by one the teens meet their fate.
A nuclear leak creates a mutant Slithis sea monster, which terrorizes the variety of pets, winos, and hippies who hang around Venice, California.
A Russian missile submarine disappears without trace during a secret mission in the Greenland Sea. A vessel is deployed to search for it, captained by the brother of the missing submarine’s commander. The search crew is tasked with locating the submarine and preventing a top-secret weapon from falling into enemy hands. Meanwhile, a geological research operation at the North Pole awakens the Kraken, a giant deep-water monster with an incredible ability to camouflage and an uncanny intelligence. As the search party narrows in on the missing submarine, they will encounter the legendary creature of the deep.
When a mad scientist begins kidnapping wrestlers and extracting their spinal fluid to create a race of Gill Men, two cops call in Batwoman to investigate. But when her mission leaves the scientist horrifically scarred, he seeks revenge.