Plot hole: Tyler jumps into the water, then grabs his mask and puts it on and begins swimming, but he fails to clear his mask by blowing the water out of it. Without clearing it, he wouldn't have been able to see a thing.
The Cave (2005)
1 plot hole - chronological order
Directed by: Bruce Hunt
Starring: Lena Headey, Morris Chestnut, Cole Hauser, Piper Perabo, Eddie Cibrian
Factual error: The dive crew says they are using rebreathers as dive gear. Rebreathers do not produce bubbles, but most of the underwater shots show the team making bubbles.
Charlie: They fly! They freakin' fly.