Why was the alternate alex kitner death in Jaws?

The reason why the alternate Alex Kitner death wasn't in the movie ''Jaws'' because the director Steven Spelberg and the crew thought what they shot was extremely scary and would scare people to death. They thought if they put the whole entire scene was in the film, the film would be rated R when they wanted the film to be rated PG. So after they shot it, they took the shark out of the scene and cut the scene.