Revealing: The megalodon is attacking the yacht and the party goers are jumping off the yacht, and some make it to a huge inflatable round safety raft. Off to the right of the safety raft you can see a visible yellow line stretching out from it used to keep the raft in position so it does not drift away.

Continuity: On several occasions, there is a long shot showing a boat moving through the water, immediately followed by a closer shot of the boat in which it is obvious that the boat is not moving.

Factual error: Numerous times no bubbles come from any of the divers air tanks at all, revealing that some underwater shots were filmed elsewhere.

Revealing: The megalodon appears, and in signaling for help Ben shoots a flare into the sky, which catches the attention of Hector flying in the helicopter. In the reaction shot of Hector (shown from outside of the helicopter) there is a reflection of a fence on the side of the helicopter. Ben is signaling for help out in the ocean.

Continuity: When the parasailing woman is trying to grasp the researcher's hand, you keep seeing two different shots: an underwater one, and one above the water. In the underwater one, you keep seeing the woman underneath the parachute, but on the above water, you see her above it. This happens repeatedly.

Factual error: The megalodon tooth featured is actually not megalodon: it is laterally compressed, lacking a scar and fine serrations, and does not have a v-shaped root. The tooth shown appears to be a member of the genus Isurus, the makos, or possibly what most scientists identify as the great whites true ancestor, Cosmopolitodus.

Visible crew/equipment: When the three main characters are sitting at the table, the cameraman is reflected in the picture at the back of the room.

Factual error: The shark is supposedly attracted to the undersea fiber optic cable because the cable is surrounded by an electrical field. Even though sharks are in fact attracted to electrical fields, fiber optic cables do not emit any electromagnetic radiation.

Continuity: During one sequence, Ben moves the throttle lever all the way up several times without moving it down in between.

Factual error: At the beginning the shark attacks and kills a diver supposedly operating at a depth of 1,500 feet. The footage of the shark eating the diver is that of a great white thrashing on the surface.

Factual error: In reality, a Megalodons' tooth is at max a little bigger than your hand. In the parts of the film with the mama Megalodon, its teeth were the size of the people themselves.

Continuity: When Ben is taking a picture of the shark tooth to send off for analysis, he snaps a photo with his digital camera, and without connecting the camera to his computer the picture magically appears. The photo has no background and, mysteriously, Ben's fingers are not on the tooth.

Continuity: The size of the megalodon keeps changing throughout the film.

Continuity: When the time appears on the screen outside the apex building, it states the time is 5 am but in the next shot the clock above the window says it's 10.30.

Continuity: When Ben submits his request to identify the shark tooth to the bulletin board, he titles the message "Mystery Shark". When Cat finds it, it's titled "Mistery Shark". In the following close-up when she's reading it, it's titled "Mystery Shark" again.

Factual error: At the start of the movie, a lobster is caught off the coast of Mexico with large claws, Mexican lobsters are "spiny" lobsters which do have claws. Maine lobsters have claws and are not found in Mexico.