La notte degli squali

Night of the Sharks is a 1988 Italian-Spanish-Mexican film directed and co-written by Tonino Ricci. The film's story takes place in Miami, Florida and Cancún, Mexico, although it was filmed in the Dominican Republic. It was the last film by actor Christopher Connelly, who would die of lung cancer that same year.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.

Poster © the film's rights holders.