Best movies like Octopus 2: River of Fear

A menacing shark-like predator attacks a Hawaiian tourist area in this low-budget creature feature. An uncredited Roger Corman served as executive producer.

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.

When an underwater ocean lab is lost in a earthquake, an advanced submarine is sent down to find it and encounters terrible danger.

An oceanic observation station is in desperate trouble after a sudden shark attack wrecked the oxygen supply. The accompanying ship, a coast guard cruiser, and other ships in and around the Bermuda triangle are attacked as well. The US Navy sends a submarine to investigate, but soon they too are under attack.

When an insatiable great white shark terrorizes the townspeople of Amity Island, the police chief, an oceanographer and a grizzled shark hunter seek to destroy the blood-thirsty beast.

Police chief Brody must protect the citizens of Amity after a second monstrous shark begins terrorizing the waters.

This third film in the series follows a group of marine biologists attempting to capture a young great white shark that has wandered into Florida's Sea World Park. However, later it is discovered that the shark's 35-foot mother is also a guest at Sea World. What follows is the shark wreaking havoc on the visitors in the park.

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.

A team of environmentalists, including a reporter, her camera man, and an environmentalist's famous girlfriend charter a boat and with the captain, sail to a military island. They suspect the island is hosting to illegal activities. Upon arrival, however, they find no one. They finally reach a deserted house, where they find Dr. Susan Richardson, who tells them that everyone on the island is dead, including her father. Richardson's team were working on a compound that could make edible plants grow to super size, however the military intervened with plans of their own. They wanted to test the compound's effects on animals, and proceeded to feed it to several komodo dragons and cobras.

Thirty years ago, Ray Reiter witnessed the brutal death of his parents at sea by a strange, octopus-like creature. Now determined to exact revenge, he joins archaeologist Nicole on a perilous high-seas expedition to find a legendary Greek Opal - said to be guarded by the very beast that murdered his family. As they come face to face with the killer Kraken, they must also battle a ruthless crime lord, who will stop at nothing to seize the coveted treasure for himself.

A giant mutated alligator runs riot in a small town after the sewer system washes it into a lake.

A backwoods game warden and a local doctor discover that giant leeches are responsible for disappearances and deaths in a local swamp, but the local police don't believe them.

Scientists pursuing the mysteries of the deep are threatened by a beautiful girl who seems to have returned from the dead and by a prehistoric sea creature that dwells in the deadly Bermuda Triangle.

An adventure-loving couple convince their friends to explore a remote, uncharted cave system in the forests of Northern Australia. With a tropical storm approaching, they abseil into the mouth of the cave, but when the caves start to flood, tensions rise as oxygen levels fall and the friends find themselves trapped. Unknown to them, the storm has also brought in a pack of dangerous and hungry crocodiles.

After an overly ambitious businessman transports an 80-foot python to the United States, the beast escapes and starts to leave behind a trail of human victims. An FBI agent and a snake specialist come up with a plot to combat the creature by pitting it against a bioengineered, 70-foot boa constrictor. It's two great snakes that snake great together!

A deep sea submersible pilot revisits his past fears in the Mariana Trench, and accidentally unleashes the seventy foot ancestor of the Great White Shark believed to be extinct.

An exploratory dive into the deepest depths of the ocean of a daring research team spirals into chaos when a malevolent mining operation threatens their mission and forces them into a high-stakes battle for survival.

The blood orchid - a rare flower that could hold the secret of eternal life and be worth a fortune to the company that finds it first. Led by a pharmaceutical research team, a scientific expedition sets out to go and explore deep into the jungles of Borneo to locate and bring back samples of the legendary plant. Battling through rainstorms to make their way upriver, the group encounters poisonous insects and a ferocious crocodile, only to discover they're being stalked by an even greater danger: a gathering of giant anacondas. Heat-sensing, fifty-foot-long flesh eaters that will go after anyone that crosses in their path.

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 pair of young vacationers are involved in a dangerous conflict with treasure hunters when they discover a way into a deadly wreck in Bermuda waters.

The crew of an experimental underwater nuclear base are forced to struggle for their lives when their explorations disturb a creature who threatens to destroy their base.

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 growth hormone experiment gets out of hand, when the the resulting giant man-eating rats escape, reaking havoc on the unsuspecting campus. Much blood-letting follows.

Little coastal town is being terrorized by deadly Barracudas.

Several people disappear from and at the sea. Their bodies are found gnawed to the skeleton, even the marrow is missing. The scientists have no idea which animal could do such things. Dr. Turner begins to suspect that the company which builds a tunnel beneath the bay might have poisoned the environment and caused an octopus to mutate to giant dimensions...

The California coast is terrorized by two enormous prehistoric sea creatures as they battle each other for supremacy of the sea.

When a cockroach-spread plague threatened to decimate the child population of New York City in the original Mimic, biologist Susan Tyler and her research associates developed a species of "Judas" bugs and introduced them into the environment, where they were to "mimic" the diseased roaches and infiltrate their grubby habitats. The plan worked until the bugs evolved to mimic their next prey... humans! Just when they were all thought to be dead, the giant cockroaches are back, and this time they've mutated to take on human form!

A man, his business partner, and his wife are enlisted to transport an unknown object from a Russian military base, only to discover that the object is a giant, genetically-altered python.

When an accidental death verdict is given on discovery of the remains of a top scientist, within the stomach of a hammerhead shark his closest friend Marine Biologist Steven McRay is not happy with the explanation and travels to investigate further, where he discovers that his friend's death was not an isolated incident, and that the local population have been terrorised by a rash of shark attacks.Developments in scientific technology had allowed experts to predict the pattern and likelihood of Shark Attacks, but now it seems that they may also be able to actually control these factors, rendering at their disposal the ultimate Killing machine.Enjoy the water... you may never want to go in the sea again!

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.

An eclectic group of characters set sail on Captain Lansen’s leaky cargo ship in an attempt to escape their various troubles. When a violent storm strikes, the ship is swept into the Sargasso Sea and the passengers find themselves trapped on an island populated by man-eating seaweed, giant crabs and Spanish conquistadors who believe it’s still the 16th century.

Jewel thieves attempt to recover treasure from piranha infested waters. Mistrust and betrayals happen amongst the gang in the quest for gold.

Happy couple Jason and Alexandra lose their sail yacht in a storm and are grateful to get picked up by Captain Jim Bigelow's commercial carrier. Suspicious about the ship's doctor and realizing the ship is improbably empty and the radio not broken as the crew claims, Jason starts snooping around. Bodies on meat-hooks, genetic experimentation and giant spiders are what he finds.

What is supposed to be a marriage boot camp on a remote island turns into the ultimate test for survival when a 6-headed shark starts attacking the beach. Trapped with minimal weapons they try to fight off the shark, but quickly discover that no one is safe in the water or on land.

A futuristic underwater sea-lab is having problems with a UFO that's parked between them and a nearby deep ocean trench. As they investigate, they attract the unwanted attention of a dangerous creature who puts the scientists and crew in danger.

Hunters set out to catch the legendary Scottish monster that has defied explanation and eluded capture since the 1940s.

A group of biology students head to the Florida Everglades for a holiday, but instead of fun in the sun, they run into trouble with a mutated, bloodthirsty, and quite deadly jellyfish-man-monster.

A biological experiment in Florida goes awry. The result: 8-foot long land crabs which roar loudly and kill everything in sight.

A military vessel on the search for an unidentified submersible finds themselves face to face with a giant shark, forced to use only what they have on board to defend themselves from the monstrous beast.

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.

Gigantic monsters threaten to destroy everything in their path as mankind remains defenseless

When a mad scientist mixes the genes of a killer whale and a wolf, it creates the Whalewolf, and it's up to Sharktopus to stop it.

A beautiful island is home to thousands of species of aquatic life. Now there is a new species: the 5-Headed Shark is all heads and teeth. Shaped like a demented starfish, this monster terrorizes the open ocean before invading the beaches of Puerto Rico, endangering the once peaceful island paradise.

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.

A baby dinoshark evolves into a ferocious predatory adult, terrorising tourists and locals offshore from Puerto Vallarta, Mexico.

With their father killed by a swarm of vampiric sea creatures, Bering Sea adventurers, Joe and Donna, team up with a marine biologist and her devoted deckhand to render the species extinct.

This menacing monster yarn stars James Van Der Beek as government scientist Dan Leland, who's sent to investigate reported sightings of a giant squidlike beast that's put the entire population of a fishing village on edge. Though Leland starts his journey confident that this sea creature with an insatiable appetite is the stuff of old legends, a string of horrific occurrences soon begins to change his mind.

The Megalodon shark. A prehistoric killing machine 60 feet long, flashing 200 pounds of teeth and weighing over 20 tons. It's the deadliest predator the world has ever seen. The scientists say it's been extinct for more than 10,000 years. The scientists are wrong. In the darkness of the deep, an underwater research station has been viciously destroyed. Now a tough team of daring divers led by Spencer Northcutt [Antonio Sabato Jr. "Melrose Place"] is taking an experimental sub to war. It's killer instinct vs. sophisticated technology, deadly jaws vs. harpoon-tipped torpedoes, mega-shark vs. modern man is a thrilling extreme deep sea fight to the death.

A coastal town is plagued by a supernatural man-eating shark. A ghost hunter joins forces with a sea captain to uncover the secrets of the area's dark past and find a way to exorcise the spectral predator.

Oilman Paul Sturges' idyllic family vacation turns into a nightmare when they encounter a ferocious megalodon shark that will stop at nothing to protect its territory. Stranded and under constant attack, Paul and his family must somehow find a way to get his family back to shore alive before it strikes again in this epic battle between humans and nature.