Continuity mistake: At the end Brody throws the diving tank into the shark's mouth with the bottom first. When he shoots the tank it has turned round with the fat end facing out.
Revealing mistake: When the shark swims away with three barrels, in the next shot all three men are standing at the back of the boat watching it. Look at the sea in front of them and you can see one of the barrels waiting to pop up.
Continuity mistake: As Brody flips through his shark book, he pauses to look at a photo of two fishermen and their catch. The photo is on the right page, but in the previous shot where we see Brody stop flipping through, there was no picture on the right page as seen in a reflection on his glasses, just words. (00:25:30)ryguy_1983
Continuity mistake: Throughout the movie we see a number of underwater scenes with the camera shot looking up under the swimmers where the water is very clear and blue given how many swimmers we can see from a distance. The only problem is that the water everyone is swimming in is greenish and cloudy as can be seen with the camera shots that are half in and out of the water right along side of the swimmers.jerimiah