Humanoids from the Deep is a 1980 science fiction monster movie, starring Doug McClure, Ann Turkel, and Vic Morrow. Roger Corman served as the film's (uncredited) Executive Producer, and the film was distributed by his New World Pictures. It was directed by Barbara Peeters (aka Barbara Peters).
Fishermen from the fishing village of Noyo catch what appears to be some kind of monster in the netting of their boat; one of them falls into the water and is dragged under the surface by something unseen. Another fisherman attempts to call for help with the aid of a flare gun but he slips and shoots it accidentally into the deck, causing the vessel to burst into flame and then explode. Everybody onboard is killed.
Teenagers Jerry Potter (Meegan King) and Peggy Larson (Lynn Schiller) go for a swim at the beach. Jerry is abruptly pulled under. Peggy believes it is simply a prank until she discovers his horribly mutilated corpse. The screaming girl tries to make it to the beach but she is attacked and dragged onto the sand by a monstrous figure. The humanoid thing tears off her swimming suit and rapes her.
At night, on the same beach, two more teens are about to have sex in a small tent when another humanoid monster claws its way inside. It brutally kills the boy and chases the girl onto the beach. She manages to outrun her assailant but then runs straight into the arms of yet another humanoid. The monster throws her onto the sand and rapes her.
A company called Canco has announced plans to build a huge cannery near Noyo. It turns out that the murderous, sex-hungry mutations are apparently the result of Canco's experimentation with a growth hormone they had earlier administered to trout. The trout escaped from the laboratory waters into the ocean during a storm, and were then eaten by other, larger fish who proceeded to instantly mutate into the brutally depraved humanoids who have begun to terrorize the village.
By the time heroic Jim Hill (McClure) and Dr. Susan Drake (Turkel) have figured out what is going on, it is too late to stop the village's annual carnival from starting. At the carnival, the humanoids show up in droves, relentlessly murdering the men and raping every woman they can grab. Luckily, Jim devises a plan to stop the marauding beasts. The morning after the carnival, everything seems about to return to normal. However, Peggy has survived her sexual assault and is about to give birth when her monstrous offspring suddenly bursts out of her stomach in a fountain of blood.
Critical reviews were far from laudatory. Paul Taylor, in Time Out, said that “Despite the sex of the director, a more blatant endorsement of exploitation cinema's current anti-women slant would be hard to find…Peeters also lays on the gore pretty thick amid the usual visceral drive-in hooks and rip-offs from genre hits; and with the humour of an offering like Piranha entirely absent, this turns out to be a nasty piece of work all round. Phil Hardy’s The Aurum Film Encyclopedia: Horror, said, after noting that additional sex and violence scenes had been edited into the film without director Peeter’s knowledge, “…weighed down as it is with solemn musings about ecology and dispossessed Indians, it looks as if it had always been a hopeless case." Nathaniel Thompson, on his Mondo Digital website, observed, “Director Peeters claimed that Roger Corman added some of the more explicit shots of slimy nudity at the last minute to give the film some extra kick, but frankly, the movie needed it. Though competently handled, the lack of visual style, occasionally slow pacing, and peculiar lack of (intentional) humor hinder this from becoming an all-out trash masterpiece…” But Michael Weldon, writing in his Psychotronic Encyclopedia of Film, opined, “Many were offended by the rape aspect of this fast-paced thriller featuring lots of Creature from the Black Lagoon-inspired monsters…Like it or not, it was a hit and is not dull.”