Humanoids From the Deep | 1979
Something has begun to terrorize a small fishing village in the Pacific Northwest. Men are being killed and the women carried off. A scientific study reveals that the large amount of chemicals in the local water has created a mutation, large creatures that are half fish, half human. These humanoids are coming to shore to mate with the women in the town, and when a large group of them attack during the annual salmon festival, the conflicts between townspeople are put aside as they fight back.