Movies like Mega Piranha

A biological experiment goes bad, this time releasing a gaggle of mutated great white sharks with a taste for human flesh. Soon enough, shark expert Nick West is on the case, leading a crew to study them and eventually bring them back into captivity. West's plans hit a snag, however, when Australian shark hunter Roy Bishop is called in to wipe out the fishy menace.

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 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.

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 civilian oil rig crew is recruited to conduct a search and rescue effort when a nuclear submarine mysteriously sinks. One diver soon finds himself on a spectacular odyssey 25,000 feet below the ocean's surface where he confronts a mysterious force that has the power to change the world or destroy it.

Before they can complete renovations on their new country inn, a widowed father and his young daughter are visited by a strange group of tourists. He soon makes a chilling discovery: they are disaster junkies from the future who visit the past to witness history's greatest catastrophes—and his small town is their next stop.

When scientists discover something near Antarctica that appears to be a buried Pyramid, they send a research team out to investigate. Little do they know that they are about to step into a hunting ground where Aliens are grown as sport for the Predator race.

Cocky researcher Sebastian Caine is working on a project to make living creatures invisible. Determined to achieve the ultimate breakthrough, Caine pushes his team to move to the next phase — using himself as the subject. The test is a success, but when the process can't be reversed and Caine seems doomed to future without flesh, he starts to turn increasingly dangerous.

During the reign of the Vikings, a man from another world crash-lands on Earth, bringing with him an alien predator. The man must fuse his advanced technology with the weaponry of the vikings to fight the monster.

Two hundred years after Lt. Ripley died, a group of scientists clone her, hoping to breed the ultimate weapon. But the new Ripley is full of surprises … as are the new aliens. Ripley must team with a band of smugglers to keep the creatures from reaching Earth.

A team of elite commandos on a secret mission in a Central American jungle come to find themselves hunted by an extraterrestrial warrior.

The troopers of two starships have joined forces to terminate a massive bug attack at a Federation outpost. Before the mission can be completed and the survivors evacuated, one ship abruptly departs and goes inexplicably dark. The remaining battle-hardened troopers race to the rescue only to discover that the threat from the bugs is about to hit home.