The Giant Leeches: Underwater Denizens of the Florida Everglades
The Giant Leeches were grotesque mutant worms with a taste for human flesh from 1959’s independent B-movie Attack of the Giant Leeches.
Briefly inhabiting an underwater cave in the Florida Everglades, these monstrous-yet-intelligent leeches would kidnap locals and feed on them deep beneath the water’s surface. However, they would eventually meet their end at the hands of game warden Steve Benton, his diving team, and a few sticks of dynamite.
As to their origin, it was speculated that the Everglade’s proximity to Cape Canaveral and the use atomic energy may have led to a mutation, perhaps a type of gigantism, of the local wildlife.