Continuity mistake: In the airport scene Scott Caan introduces his new "girl" to Paul Walker and Jessica Alba. In the background behind Paul you see a long-haired brunette wearing a strapless shirt walk out of the terminal and continue past the camera. The shot changes to a wide angle of the four main characters, and a second or so after the change you see the same brunette come out of the terminal again.
Continuity mistake: When they are pulling the cannon onto the boat, about ten minutes prior to the end, there is no water on the cannon, it is completely dry though it just came out of the water.
Continuity mistake: During the scene when Paul Walker goes back into the water to find his watch, just before he finds the plane he is wearing it, but when he siwms off towards the plane he does not have the watch on.
Continuity mistake: When Jessica Alba is going from the pier to the boat to check on Paul Walker after his leg went through the boat, it shows her take off her flip flops. But when it cuts to where she is on the boat she has the flops on.
Continuity mistake: When they first discover the wreck and they are pulling pieces of treasure up to the rear deck of the boat, Jessica's fins change from the clear fins to a set of blue ones without her changing or getting out of the water.
Continuity mistake: When Paul Walker is removing water from his boat, he is pulling the cord for a pump, then falls in ankle-high water. The shot then pans back and he is sitting on a dry deck.
Continuity mistake: When Amanda looks into the airplane before going in her regulator mouth piece is in her mouth. Next shot shows the regulator dangling on the side of her body when entering the plane hole. (00:32:03)
Continuity mistake: Amanda finds a treasure piece in her metal strainer and then sets off to the airplane where the strainer is empty, without the treasure piece that she just found moments ago. (00:31:04 - 00:31:46)
Continuity mistake: The scene where Paul Walker and Scott Cann are wrestling in the water when the sharks show up, Paul Walker is wearing a diver's mask when they start. Then it cuts to a different angle and he is not wearing it, and then asks Jessica Alba to throw him his mask when he surfaces.
