Humanoids from the Deep 1980
Noyo is a charming fishing town. One day, a fisherman’s net catches a big “something”. While trying to pull the net, a child falls into the sea. The sea turns into a pool of blood. Unfortunate events continue when the clumsy friends on the same boat accidentally find a way to set the boat on fire and eventually manage to blow it up. That night, the dog of Jim Hill (Doug McClure), one of the best fishermen in town, encounters one of the amphibious creatures that emerged from the sea.