Deep Blood (1989)

aka’s: Sangue Negli Abissi/Profondo Sangue/Sharks, The Challenge/Wakan

Several young men have to stop an ancient native American evil in the form of a killer shark which is attacking a small beach community. Stars Frank Baroni, Allen Cort and Keith Kelsch. Also with Laura Gemser (uncredited). Was never released in the U.S. and other countries.