Tentacles (1977) is a Horror, Science Fiction, Adventure, Action film that follows 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... Currently, you can watch Tentacles on Amazon Prime Video, fuboTV, MGM+ Amazon Channel, MGM Plus Roku Premium Channel. Streaming availability may vary by country and platform over time. It has a user rating of 4.6 out of 10 from 118 votes. Fans of horror movies may also want to explore similar titles below.