Devilfish (1984)

Monster Shark (Italian: Shark – Rosso nell’oceano) is a 1984 science fiction–horror film directed by Lamberto Bava. It was also released in various countries as Devil Fish, Monster from the Red Ocean, Devouring Waves and Shark: Red in the Ocean. The script was co-written by Dardano Sacchetti, based on a story idea contributed by Luigi Cozzi and producer Sergio Martino.