who wrote the screen?
Carl Gottlieb (the guy who plays Meadows) wrote the screenplay, with additional help from Howard Sackler. Another Answer Peter Benchley wrote a book, Jaws, in 1973, and was commissioned to craft the screenplay for the movie in 1975, which Steven Spielberg directed, according to IMDb.
The 1975 novel Jaws was written by Peter Benchley. The screenplay for the movie was written by Peter Benchley, Carl Gottleib and Howard Sackler. The novel was based on true events that occurred off of a Jersey Beach in 1916.