Curiosidades

A mechanical shark's head was built for special effects; the rest was stock footage bought from National Geographic.

Director Joe D'Amato claimed in an interview that the underwater scenes were shot at various places: at Ventotene, in a Roman swimming-pool and in a New Orleans aquarium. He also said that Raffaele Donato had the idea of directing this movie himself, and so d'Amato went along with it, but after a few scenes Donato "didn't feel up to directing the film through to the end, and since I was on the set anyway as producer and director of photography, he agreed that I should take over."

The sharks death scene is from The Last Shark. Footage of this movie and The Last Shark was later used in Cruel Jaws.

The film's Japanese VHS artwork features the shark from Jaws 4.

Music from Zombie 5 Killing Birds is used when the shark attacks. It was also used in Hitcher In The Dark and The Crawlers.