Deep Blue Sea (1999)

Continuity mistake: Carter puts a bandage on his right arm because of the blood. When he tries to shot the shark the bandage gets larger.

ozwal13

Continuity mistake: When the shark is attacking the oven which the preacher is in, the shark severely damages the oven's glass door. Later, when it cuts to a shot from outside while the shark is bashing against the door, only a few cracks are visible in the glass. (00:53:40)

Mortug

Other mistake: Near the beginning of the film, Carter asks Tom how high the fences are, then he tells them to make them higher, and Scoggs confirmed they were raised, but you can see that the fences never get any higher.

Revealing mistake: As one of the lab crew is showing Tomas Jane the suspended tiger shark you can see a horizontal line in the water in the background. this is the edge of the water tank used to film the exterior scenes (mentioned in DVD extras).