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Movies like Tentacles (1977)

The best movies like Tentacles (1977) are The Swarm (1978), Orca (1977) and Blood Tide (1982). If Tentacles hooked you with its horror and science fiction, these 30 similar films are what to watch next, and every pick says why it matches.

Quick picks

  1. The Swarm (1978)

    Scientist Dr. Bradford Crane and army general Thalius Slater join forces to fight an almost invisible enemy threatening America; killer bees that have deadly venom and attack without reason. Disaster movie-master Irwin Allen's film contains spectacular special effects, including a train crash caused by the eponymous swarm.

    Why it matches: Fans watch both · both science fiction & horror

  2. Orca (1977)

    After witnessing the killing of his mate and offspring at the hands of a reckless Irish captain, a vengeful killer whale rampages through the fisherman's Newfoundland harbor. Under pressure from the villagers, the captain, a female marine biologist, and an Indigenous tribalist venture after the great beast, who will meet them on its own turf.

    Why it matches: Fans watch both · both horror

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  3. Blood Tide (1982)

    An adventurer hunting for treasure in Greece accidentally frees a monster that forces local villagers to sacrifice virgins.

    Why it matches: Fans watch both · both adventure & horror

  4. Prophecy (1979)

    When a dispute occurs between a logging operation and a nearby Native American tribe, Dr. Robert Verne and his wife, Maggie, are sent in to mediate. Chief John Hawks insists the loggers are poisoning the water supply, and, though company man Isley denies it, the Vernes can't ignore the strangely mutated wildlife roaming the woods. Robert captures a bear cub for testing and soon finds himself the target of an angry mutant grizzly.

    Why it matches: Fans watch both · both horror & science fiction

  5. The Food of the Gods (1976)

    Morgan and his friends are on a hunting trip on a remote Canadian island when they are attacked by a swarm of giant wasps. Looking for help, Morgan stumbles across a barn inhabited by an enormous killer chicken. After doing some exploring, they discover the entire island is crawling with animals that have somehow grown to giant size. The most dangerous of all of these, however, are the rats, who are mobilizing to do battle with the human intruders.

    Why it matches: Fans watch both · both horror & science fiction

  6. King Kong (1976)

    An oil company expedition disturbs the peace of a giant ape and brings him back to New York to exploit him.

    Why it matches: Fans watch both · both adventure & horror

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  7. Wild Beasts (1984)

    PCP is unexplainably released into the Frankfurt water supply and sends the zoo inhabitants crazy. One evening after a malfunction of zoo security the gonzo critters rampage through the city eating and killing whatever they fancy, wreaking a night of bloody terror.

    Why it matches: Fans watch both · both action & adventure

  8. Last Cannibal World (1977)

    An oil prospector escapes from capture by a primitive cannibal tribe in the Philippine rain forest and heads out to locate his missing companion and their plane to return home.

    Why it matches: Fans watch both · both adventure & horror

  9. Massacre in Dinosaur Valley (1985)

    A plane crashes in the Amazon jungle, and its passengers must battle their way through cannibals, slave traders, wild animals and murderous piranha fish to safety.

    Why it matches: Fans watch both · both adventure & action

  10. Piranha (1978)

    When flesh-eating piranhas are accidentally released into a summer resort's rivers, the guests become their next meal.

    Why it matches: Fans watch both · both horror

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  11. Doomwatch (1972)

    The waters surrounding an island become contaminated by chemical dumping, and people who eat fish caught in those waters become deformed and violent.

    Why it matches: Fans watch both · both horror & science fiction

  12. Day of the Animals (1977)

    The depletion of the earth's ozone layer causes animals above the altitude of 5000 feet to run amok, which is very unfortunate for a group of hikers who get dropped off up there by helicopter just before the quarantine is announced.

    Why it matches: Fans watch both · both science fiction & horror

  13. Man from Deep River (1972)

    A photographer in the rain forest is captured by wild natives, and after months of living with them, he marries the chief's daughter and helps protect the village from a vicious cannibal tribe.

    Why it matches: Fans watch both · both adventure & horror

  14. Alligator (1980)

    A baby alligator is flushed down a toilet and survives by eating discarded lab animals that have been injected with growth hormones. The now gigantic animal escapes the city sewers and goes on a rampage, pursued by a cop and a big-game hunter.

    Why it matches: Fans watch both · both horror & science fiction

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  15. Attack of the Crab Monsters (1957)

    A group of scientists travel to a remote island to study the effects of nuclear weapons tests, only to get stranded when their airplane mysteriously explodes. The team soon discovers that the tests have given rise to crabs mutated into intelligent, impervious, telepathic giants intent on increasing their numbers by breeding, then travelling to populated areas to feed, and which do not intend to be stopped by their discoverers.

    Why it matches: Fans watch both · both science fiction & horror

  16. The Land That Time Forgot (1974)

    During World War I, a German U-boat sinks a British passenger ship and takes the survivors aboard. After getting lost in fog, the submarine surfaces near the unknown island of Caprona, a lost world where they find dinosaurs and Neanderthals.

    Why it matches: Fans watch both · both science fiction & action

  17. Humanoids from the Deep (1980)

    After a new cannery introduces scientifically augmented salmon to a seaside town in the Pacific Northwest, a species of mysterious, mutated sea creatures begin killing the men and raping the women.

    Why it matches: Fans watch both · both horror & science fiction

  18. Bug (1975)

    An earthquake releases a strain of mutant cockroaches with the ability to start fires, which proceed to cause destructive chaos in a small town. The studies carried out by scientist James Parmiter, however, reveal an intent with much more far-reaching consequences.

    Why it matches: Fans watch both · both science fiction & horror

  19. Island of the Fishmen (1979)

    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.

    Why it matches: Fans watch both · both science fiction & horror

  20. Caltiki, the Immortal Monster (1959)

    Academic researchers are chased by a nuclear-hot specimen of ancient Mayan blob.

    Why it matches: Fans watch both · both horror & science fiction

  21. Kingdom of the Spiders (1977)

    Investigating the mysterious deaths of a number of farm animals, vet Rack Hansen discovers that his town lies in the path of hordes of migrating tarantulas. Before he can take action, the streets are overrun by killer spiders, trapping a small group of townsfolk in a remote hotel.

    Why it matches: Fans watch both · both horror & science fiction

  22. Grizzly (1976)

    An eighteen-foot grizzly bear figures out that humans make for a tasty treat. As a park ranger tries rallying his men to bring about the bear's capture or destruction, his efforts are thwarted by the introduction of dozens of drunken hunters into the area.

    Why it matches: Fans watch both · both horror & adventure

  23. Contamination (1980)

    A former astronaut helps a government agent and a police detective track the source of mysterious alien pod spores, filled with lethal flesh-dissolving acid, to a South American coffee plantation controlled by alien pod clones.

    Why it matches: Fans watch both · both science fiction & horror

  24. Underwater (2020)

    After an earthquake destroys their underwater station, six researchers must navigate two miles along the dangerous, unknown depths of the ocean floor to make it to safety in a race against time.

    Why it matches: Recommended by TMDB viewers · both horror & science fiction

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  25. Planet of the Vampires (1965)

    After landing on a mysterious planet, a team of astronauts begin to turn on each other, swayed by the uncertain influence of the planet and its strange inhabitants.

    Why it matches: Recommended by TMDB viewers · both science fiction & horror

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  26. Justice League (2017)

    Fuelled by his restored faith in humanity and inspired by Superman's selfless act, Bruce Wayne and Diana Prince assemble a team of metahumans consisting of Barry Allen, Arthur Curry and Victor Stone to face the catastrophic threat of Steppenwolf and the Parademons who are on the hunt for three Mother Boxes on Earth.

    Why it matches: Recommended by TMDB viewers · both action & adventure

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  27. The Host (2013)

    A parasitic alien soul is injected into the body of Melanie Stryder. Instead of carrying out her race's mission of taking over the Earth, "Wanda" (as she comes to be called) forms a bond with her host and sets out to aid other free humans.

    Why it matches: Recommended by TMDB viewers · both action & adventure

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  28. Star Trek Beyond (2016)

    The USS Enterprise crew explores the furthest reaches of uncharted space, where they encounter a mysterious new enemy who puts them and everything the Federation stands for to the test.

    Why it matches: Recommended by TMDB viewers · both action & adventure

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  29. Halo: Nightfall (2014)

    Set between the events of Halo 4 and Halo 5: Guardians… Halo: Nightfall tells the dramatic story of legendary man hunter and Naval Intelligence Officer Jameson Locke and his team as they are caught in a horrific biological attack while investigating terrorist activity on the distant colony world of Sedra. As they unravel a plot that draws them to an ancient, hellish artifact, they will be forced to fight for their survival, question everything and ultimately choose between their loyalty and their lives.

    Why it matches: Recommended by TMDB viewers · both science fiction & action

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  30. Meg 2: The Trench (2023)

    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.

    Why it matches: Recommended by TMDB viewers · both action & science fiction

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Like Tentacles and something else?

Blend two favourites and we’ll find the films in between.

Frequently asked questions

What are the best movies like Tentacles?

The closest matches to Tentacles are The Swarm (1978), Orca (1977) and Blood Tide (1982). Below are 27 more, each with the reason it matches.

What should I watch after Tentacles?

People who watched Tentacles most often go on to The Swarm (1978), Orca (1977) and Blood Tide (1982).

What is the highest-rated movie like Tentacles?

Star Trek Beyond (2016), rated 6.8/10 by 7,355 TMDB users.

What is the newest movie like Tentacles?

Meg 2: The Trench (2023) is the most recent release on this list.

Are there Italian movies like Tentacles?

Yes: Wild Beasts (1984), Last Cannibal World (1977) and Massacre in Dinosaur Valley (1985).

How are movies similar to Tentacles chosen?

First come films that Trakt’s viewers watch alongside Tentacles, then TMDB’s recommendations and films it rates as similar in story and genre. Each pick says which signal put it there.

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