A young linguist named Milo Thatch joins an intrepid group of explorers to find the mysterious lost continent of Atlantis.
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.
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.
A diver encounters a deep sea monster.
Julie, an American on vacation in Mexico, spots a giant, one-eyed amoeba rising from the ocean, but when she tries to tell the authorities, no one believes her. She finally teams up with a marine biologist in an attempt to destroy it.
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.
When a daring mission leads a deep sea submarine team into a mysterious opening on the ocean floor, they uncover a lost underwater world and awaken its ancient race of otherworldly beings.
Haunted by a terrifying incident in his past, billionaire Bill Hansen seeks revenge by enlisting a team of mercenaries and a television personality to capture and exploit a dangerous lizard-like creature.
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.
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.
Dead bodies are being found in New York harbor. The police have no clues nor suspects until Nick and his colleague realize the killer is a giant octopus. Everybody, especially the police captain, refuses to believe Nick's story, and soon the harbor will be filled with boats for the 4th of July celebrations.
James Murphey is a rugged cryptozoologist, who thirty years earlier, during a trip to Loch Ness, Scotland, had a fatal encounter with the fabled "Nessie" creature that killed his father, and left James with deep facial scar. Twenty years later, James is hunting for Nessie, when his search leads him to the sleepy town of Pike Island, Ashburn, on Lake Superior. Hiring Josh Riley as his guide, James and Josh bond over their mutual scientific interests and deceased fathers, while James tries to convince Josh's mother, Sheriff Karen Riley, that the 60-foot plesiosaur is killing and breeding.
A crook decides to bump off members of his inept crew and blame their deaths on a legendary sea creature. What he doesn't know is that the creature is real.
A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.
The crew of a West of Ireland trawler—marooned at sea—struggle for their lives against a growing parasite in their water supply.
A top secret drilling platform in the Gulf of Mexico raises a dormant alien creature from the depths. Once loose, the creature goes on a murderous rampage.
Marine biologist Johanne is doing research on a fish farm in Vangsnes, a rural community located by the fjord, when she encounters several strange occurrences. Along with the brutal deaths of two local teenagers, all signs point to the deep fjord; can there be more to the depths than the eye can see? At the bottom of the deepest fjord rests a mythical monster as large as a mountain, with a myriad of arms ready to crush and devour anything they can grab.
The controlled explosion of an atomic bomb in the Arctic Circle awakens a frozen dinosaur that will wreak havoc in New York City.
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.