The Horror of Party Beach

Near a small East Coast of the United States beach town, in broad daylight and a short distance from shore, a boat dumps a 55-gallon metal drum labeled "Danger Radioactive Waste" into the ocean. The drum opens upon reaching the bottom, releasing its contents upon a sunken ship and a nearby human skeleton. The skeleton (but apparently not the proximate, transparent tropical fish) is transformed by the "radioactive waste" into an aquatic, humanoid monster characterized by bulging eyes, fins, and mouth stuffed with appendages that resemble sausage links. The monster immediately ambulates toward the beach, where a dance party featuring The Del-Aires musical group is in progress.