Continuity: When Jared is greeting Bryce at the airport, the same long-haired brunette comes through the doorway behind them twice in successive shots.
Continuity: After Jared looses his watch, there is a shot in the same dive where he still has the watch on.
Continuity: While being chased after having the accident, Jared jumps out of the driver's side of the truck and runs to the passenger side. There's a Land Rover in the background which disappears in the next shot.
Continuity: When Jared is pumping water out of his boat, the floor of the boat full of water. When he falls through, the floor is dry.
Continuity: When Sam gets into Jared's boat after he has put his foot through the floor, she takes her sandals off prior to getting in, but in the next shot showing her climbing into the boat, she has her sandals on.
Continuity: While cruising in the new power-yacht, the radar antenna is spinning in distant shots, and is not spinning in close-ups.
Crew or equipment visible: When Amanda becomes entangled in the underwater plane, you can see a diver behind her trying to hide from the camera.
Revealing mistakes: When Amanda is filming the boys on the jet skis, the video camera is switched off.
Continuity: When Jared and Sam are meeting Bryce at the airport, a female extra walks through the arrivals gate in the background. A moment later, the same extra walks through again.
Crew or equipment visible: Towards the end of the movie Jared, Sam, and Bryce take off after Primo pulls up next to them, you can see the reflection of a camera in the windshield of the truck as they are going down the narrow ally.
Miscellaneous: When Bryce gets out of the water from being scared by the sharks, his hair changes from being pushed to one side to being pushed down the middle.
Miscellaneous: Towards the end of the movie, when they are raising the Zephyr's canon after they get it out of the water it is dry, not wet.
Miscellaneous: After Jared loses his watch there are sharks in the water, when he goes down to get it, there are no more sharks in the following scenes.
Continuity: When Jared and Bryce start wrestling in the water and Jared loses his watch, they both have masks and snorkels on. When they surface when the sharks come, neither has a mask on, and Jared gets a mask from Sam to go back down to get the watch.
Revealing mistakes: Obvious stunt doubles for the jet ski tricks
Audio/visual unsynchronized: The sounds produced by the Honda 4-stroke outboards on the triple engine offshore boat are not accurate. They are clearly produced by a low-restriction exhaust on an inboard or inboard/outboard engine configuration. The real engines should sound far more quiet and timid.
Audio/visual unsynchronized: When Jared, Sam, Amanda, and Bryce are in the pool discussing whether or not to dig for the ship or report the plane, Jared says "One more thing, you don't repeat this to anyone"....and his lips mouth the word Capiche, but it is dubbed over as “OK”, and it's done by someone with an accent.
Continuity: Near the end when Sam is fighting with that guy underwater, her hair is pulled back by a rubber band or elastic at the start of the fight and at the end when she is swimming back to the boat. But in the middle of the fight, when he grabs her chest, her hair is loose.
Crew or equipment visible: When Jared and Bryce are fighting after they learn Sam has been kidnapped you can see Jared's mic chord under his shirt, all the way up from his waist to his neck.
Crew or equipment visible: After Jared hits the car with his truck the female driver begins to run after the truck and you can see her mic pack at the small of her back.
Continuity: When Jared and Sam are cuddling underwater during the free dive, they don't have their masks on. When they surface a moment later, they have the masks and snorkels on again.
Revealing mistakes: Many times, when something or someone hits the seafloor there is an almighty crash. The seafloor here is soft sand and would not make such a noise.
Revealing mistakes: Near the start of the film where we see the sporting divers. The diving instructor looks at his watch and then motions to the others that it is time to surface. That is not a diving watch. It has no visible stopwatch or even a rotating bezel. A diving instructor would never rely on such a watch for timing a dive of his own, let alone for a group he is supervising.
Revealing mistakes: When they are performing the dive where the cannon is found, a shot of the navigation gear on the boat indicates a speed of ten knots. The boat is stationary at this time, as there are divers down.
Continuity: At the end of the movie, when they are attempting to bring up the cannon, as the cannon comes out of the water, both the rope and the cannon are completely dry.