WEIRD! GHOULISH ATOMIC BEASTS WHO LIVE OFF HUMAN BLOOD!
Radioactive waste dumped off the coastline creates mutant monsters. The beasts attack slumber parties, beaches, tourists, and terrorize a waterfront community as a scientist, his daughter, her boyfriend and the local police try to find a way to stop them.
Another monsterfied take on the youth culture/beach party movie that was so popular in the 1960s (see previous bmoviebonanza post The Beach Girls and the Monster.)
Yeah, these monsters look super goofy but they really rack up the kill count.
The Horror of Party Beach can be streamed on Tubi but it’s also available on YouTube.