When another Mega Shark returns from the depths of the sea, world militaries go on high alert. Ocean traffic grinds to a standstill as everyone lives in fear of the insatiable beast. Out of options, the US government unleashes the top secret Mecha Shark project -- a mechanical shark built to have the same exact characteristics as Mega. A pair of scientists pilot the mechanical creature as they fight Mega in a pitched battle to save the planet. But when faulty mechanics cause the Mecha to go after humans, the scientists must somehow guide Mega to Mecha in hopes that the two titans will kill each other - or risk untold worldwide destruction.
When the seaside community of Amity finds itself under attack by a dangerous great white shark, the town's chief of police, a young marine biologist, and a grizzled hunter embark on a desperate quest to destroy the beast before it strikes again.
Police chief Brody must protect the citizens of Amity after a second monstrous shark begins terrorizing the waters.
After another deadly shark attack, Ellen Brody decides she has had enough of New England's Amity Island and moves to the Caribbean to join her son, Michael, and his family. But a great white shark has followed her there, hungry for more lives.
The U.S. Navy's special group "Blue Water" builds a half-shark, half-octopus for combat. But the sharktopus escapes and terrorizes the beaches of Puerto Vallarta.
The seemingly tranquil waterways of Venice are terrorized by the perfect killing machine. In search of his father who has mysteriously disappeared diving in the city, David stumbles across the cryptic trail leading to the long-lost fortune of the Medici. As the unwitting pawn in a Mafia plot to recover the treasure, David's girlfriend is kidnapped at gunpoint, plunging him into a desperate race against time. If he has any hope of saving her he must enter the deadly waters. Can David out-gun the Mafia assassins and survive the voracious sharks laying in wait beneath the surface, or will he succumb to the same fate as his father?
A couple on a romantic getaway find themselves stranded at sea when a tropical storm sweeps away their villa. In order to survive, they are forced to fight the elements, while sharks circle below.
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.
A group of friends enjoying a weekend steal a couple of jetskis racing them out to sea, ending up in a horrific head-on collision. They struggle to find a way home with a badly injured friend while from the waters below predators lurk.
Cutthroat pirate William Kidd captures Admiral Blayne's treasure ship and hides the bounty in a cave. Three years later, Kidd, posing as a respectable merchant captain, offers his services to the King of England. Seeking a social position, Kidd also negotiates for Blayne's title and lands, provided he can prove Blayne was associated with piracy. Launched upon his royal mission, Kidd is unaware that Blayne's son Adam is among the crew, determined to clear his father's name.
Fin and his wife April travel around the world to save their young son who's trapped inside a sharknado.
The California coast is terrorized by two enormous prehistoric sea creatures as they battle each other for supremacy of the sea.
In the quiet waters of the Mississippi, body parts are being discovered. No one knows what is behind it all, until a huge man eating bull shark turns up. This bull shark is different, as it can breath in fresh water, making a deadly encounter between anyone who comes before it. John Sanders must now try and reach the surface, with his ex-wife and whilst being held hostage.
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.
Twenty-something Richard travels to Thailand and finds himself in possession of a strange map. Rumours state that it leads to a solitary beach paradise, a tropical bliss - excited and intrigued, he sets out to find it.
The Dynamic Duo faces four super-villains who plan to hold the world for ransom with the help of a secret invention that instantly dehydrates people.
A gunrunner loses his cargo near a small coastal Sudanese town so he's stuck there. When a woman hires him to raid a sunken ship in the shark-infested waters, he sees a chance to compensate for his losses. He's not the only one.
In the South Pacific island of Makatea, career-driven magazine editor Robin Monroe is on a week-long vacation getaway with her boyfriend, Frank Martin. An emergency work assignment in neighboring Tahiti requires Robin to hire the cantankerous pilot Quinn Harris who had flown them to Makatea on a small transport plane. While flying, a powerful storm forces Quinn to make an emergency landing on a nearby deserted island. The dissimilar pair avoid each other at first, until they're forced to team up to escape from the island -- and some pirates who want their heads.
Seasoned adventurer and treasure hunter Dirk Pitt, a former Navy SEAL, sets out for the African desert with his wisecracking buddy Al in search of a confederate ironclad battleship rumored to have vanished long ago, the main draw being the treasure supposedly hidden within the lost vessel. When the daring duo come across Dr. Eva Rojas, a beautiful scientist who is juggling an escape from a warlord and a mission to stop the spread of a powerful plague, their desert expedition begins to heat up.
When a 35-foot great white shark begins to wreak havoc on a seaside town, the mayor, not wanting to endanger his gubernatorial campaign, declines to act, so a local shark hunter and horror author band together to stop the beast.