Shark! (also known as Caine) is a 1969 action film directed by Samuel Fuller and starring Burt Reynolds.

Tagline: The deadliest sharks aren't always in the water.

This film gained some infamy at the time of its release because of the death of one of its stuntmen. He was attacked and killed on camera while working with what was supposed to be a sedated shark. When the production company used the death to help promote the film, director Samuel Fuller, who had been clashing with the producers on a wide variety of issues relating to the film, quit the production. When he finally saw the version that was released to theaters, he said they had butchered it so badly while editing it that it was no longer recognizable as his film and demanded that his name be taken off of it, but the producers refused.

Samuel Fuller didn't recognize this picture because it was reedited by the producer. Fuller never wanted to talk about it.