A gunrunner loses his cargo near a small coastal Sudanese town so he's stuck there. When a woman hires him to raid a sunken ship in the shark-infested waters, he sees a chance to compensate for his losses. He's not the only one.
Shark! is a 1969 Mexican-American action film directed by Samuel Fuller and starring Burt Reynolds and Silvia Pinal. In the film, a stranded gunrunner is recruited for a treasure hunting expedition in the Red Sea. The mission requires him to dive into shark-infested waters.