The exploding compressed air tank trick that Brody uses to kill the shark could actually work. Or maybe it couldn't… But maybe it could… (Source)

Bruce lives on! The well-intentioned great white shark in Disney's Finding Nemo is named after the mechanical sharks used on Jaws. Leave it to Disney to send sharks to a 12-step program to get them to stop eating fish. (Source)

Spielberg said he knew Jaws was going to be a hit when he saw a moviegoer run out of the theater after a gory scene, throw up in the lobby, then run back in to watch the rest of the film. (Source)

During post-production, to get the sound of Chrissie drowning during the shark attack, the actress (who was actually a stunt woman) put her head back in front of a microphone while a crew member poured water down her throat. Now that's devotion to your craft. (Source)

Richard Dreyfuss said that, although an actor usually has to pretend to be interested in another character's speeches, he was mesmerized during Robert Shaw's USS Indianapolis monologue. Shaw was drunk when Spielberg did the first shoot, and none of the footage could be used. He apologized to the cast and crew, then absolutely nailed the next take. (Source)

As it turns out, sharks "typically only attack humans if they're being super annoying." Sounds scientific to us. (Source)