Corrected entry: When the Chief is typing the cause of death for the blonde chick in the beginning, if you look, he typed in "Corners" office instead of the "Coroners" office.
Corrected entry: When Chrissie is being attacked, she has a 5-second pause in being chewed-upon. When it's a hit-and-run attack this is normal (the shark realises it has made a mistake and leaves). Since Chrissie is eaten, we're talking about a bump-and-bite attack, which causes a shark to go into a feeding-frenzy. It is highly unlikely for a shark to let go for even one second in such an event.
Corrected entry: When Bruce has tipped the boat over on the 4th of July, the man in the boat is trying to get out of the water. We see Bruce swimming up to grab him, the shark's body tilted so that one eye is towards the surface and the other towards the bottom. Shouldn't Bruce's fin be sticking out of the water?
Corrected entry: In the movie you only see the shark's fin in the first half of the movie, not the rest of the fish. This was not originally intended, but rather something they were forced to do. One of the first two shark models sank and the other one blew up.
Corrected entry: In the scene where Brody and Quint are loading Hooper's shark cage into the water, Brody appears to have a shirt. In a second angle of the same scene, Brody's shirt is no longer there. The scene then cuts to Hooper in the boat cabin, and then back to the deck. Again, Brody is wearing a shirt. This process occurs a few times during these five or six minutes.