Several decades after the film's release, Lee Fierro (Mrs. Kintner) walked into a seafood restaurant and noticed an "Alex Kintner Sandwich" on the menu. She commented that she had played his mother many years ago. Jeffrey Voorhees, the manager of the restaurant who had played Alex, ran out to meet her. They hadn't seen each other since the original movie shoot.
When composer John Williams originally played the score for director Steven Spielberg, Spielberg laughed and said, "That's funny, John, really; but what did you really have in mind for the theme of Jaws?" Spielberg later stated that without Williams's score, the movie would only have been half as successful and according to Williams, it jump-started his career.
[1:21:27] According to writer Carl Gottlieb, Roy Scheider ad-libbed the line "You're gonna need a bigger boat."
According to director Steven Spielberg, the prop arm looked too fake in the scene where Chrissie's remains are discovered, so instead, they buried a female crew member in the sand with only her arm exposed.
Director Steven Spielberg said that when he first read the novel, he found himself rooting for the shark because the human characters were so unlikeable.
Steven Spielberg: Voice on Quint's marine radio, when Mrs. Brody tries to contact her husband on the "Orca."