Actor and stuntman
Tom Hennesy almost drowned during filming. Playing the Creature, he grabs Helen Dobson (actually stuntwoman
Ginger Stanley) on a pier and jumps with her into the water. The scene was shot at night, and when Hennesy and Stanley hit the water, they discovered it was full of jellyfish. In addition, a freak current started to pull them both down. Hennesy let go of Stanley, who swam to the surface, but Hennesy's inflexible Gill-Man costume had become waterlogged and too heavy to fight the current. He was rescued by two local boys who happened to be watching the filming from a nearby boat, and quickly raced over and pulled him in.