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.
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.
Little coastal town is being terrorized by deadly Barracudas.
A marine biologist and a government agent investigate mysterious deaths and rumors of a sea monster in a secluded ocean cove, and find themselves involved with a marine biology professor conducting secretive experiments, international spies trying to steal his secrets, a radioactive light on the sea bottom, and the malevolent thing which guards it.
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.
A sea creature is terrorizing a small Gulf coast town. The creature is a mutation from the Deep Water Horizon's oil spill in the Gulf. But it's not the only thing that's mutating.
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.
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.
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.
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.
Fishing, friendship, and wrestling with your new favorite superhero.
A diver encounters a deep sea monster.
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 pair of filmmakers and monster-hunters embark on a mission to capture and film a creature residing in a lake.
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.
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.
A mysterious hypnotist reverts his beautiful assistant back into the form of a prehistoric sea monster that she was in a past life.
Beleaguered adventurer Carl Denham returns to the island where he found King Kong.
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.