Benchley’s breakthrough came with his first novel Jaws, published in 1974, which sold over 20 million copies. Director Steven Spielberg adapted it into the 1975 film Jaws, starring Roy Scheider, Richard Dreyfuss, and Robert Shaw. Benchley earned $175,000 for the book and screenplay, with escalator clauses bringing his total film rights to about $250,000, plus 10% of net profits, totaling approximately $10 million.
He followed with other ocean-themed novels like The Deep and The Island, both of which were adapted into films with less success. Benchley also appeared as an interviewer in the film Jaws and made cameo appearances in other productions. He received additional income of $1 million from foreign sales of Jaws as of 1976.
After the hysteria surrounding great white sharks, Benchley became a dedicated environmentalist, learning about the species and publicly admitting he would not have written Jaws in the same way given what he later knew about shark behavior and fragility.