Hammerhead: Shark Frenzy, also known as Sharkman or simply Hammerhead, is a 2005 Syfy original movie, written by Kenneth M.Badish and Boaz Davidson, and directed by Michael Oblowitz. The film stars William Forsythe, Hunter Tylo, and Jeffrey Combs. The film premiered on Syfy June 18, 2005.
A scientist tries to save his son from cancer but his experiments turn him into a shark-man instead. A group of people from a pharmaceutical corporation are sent to the mad doctor's island to investigate his activities.
- Unlike most other Syfy original movies, there were never any complete views of the monster Hammerhead. Although, there were quick scenes using CGI graphics while the rest of the scenes used a costume portrayed by Anton Argirov.
- The monster in the film shares a similarity with the monster from the other Syfy original film Mansquito. Both films were released in 2005 and both films involve half-animal mutated monsters. Another similarity that the film shares with Mansquito is that the film is also known as "Sharkman" and had another DVD cover designed featuring a blue man with a mouth full of shark-like teeth and a shark-like nose. The text of the Sharkman DVD was the same style as the Mansquito DVD of which is also known as "Mosquito Man" just like Hammerhead: Shark Frenzy is known as Sharkman.