Jaws 1975

Don't go in the water.

An insatiable great white shark terrorizes the townspeople of Amity Island, The police chief, an oceanographer and a grizzled shark hunter seek to destroy the bloodthirsty beast.

If you like this movie you'll probably like these:

The Sugarland Express
Jurassic Park III
Deep Impact
Jaws 2
Jaws: The Revenge

Let the whole world know what you think about this movie. Just first.