Continuity mistake: When Samuel L. Jackson is grabbed by the shark (CGI) blood splatters all over the place. In the next shot the place and the water are spotless.
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.
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).
Answer: This was a CGI scene.
Ssiscool ★