Deep Blue Sea (1999) - 58 mistakes

Factual error: Without wanting to go into extreme details, the genetics and biochemistry of the entire film is flawed. No geneticist in their right mind would even think about using gene therapy - a technique which is not entirely successful yet - to increase the size of the gland. One would use any of multiple techniques to identify and clone the gene responsible for the protein in question. It is cheaper, more successful, and a lot safer and quicker to do. A copy of the gene could be inserted into E. coli and produced on a mass scale in a beaker on land. After the protein had been isolated it would not be able to be given to patients in a pill form because it would be digested in the gut (like insulin for diabetics).

Revealing: Near the beginning when the boat pulls up and the guy on the boat tells the blond-convict fella he's got a beauty 13 foot "Tiger shark" that's up in some sort of sling, the so called tiger shark is actually an animatronic great white with stripes on it. Tiger sharks have a blunt rounded nose, not a pointed one like a great white.

Continuity: When Carter climbs the ladder to get out of the water after removing the licence plate from the shark's mouth, it shows a shot of his feet and he is wearing sandals. In the tank he was wearing swim fins. He talks to the big boss for a few seconds and the fins are nowhere to be seen. He then walks away with the fins in his hand.

Factual error: The so-called 'tiger shark' fed to the Makos is quite unrealistic. As someone already mentioned, the snout is that of a Great White. Furthermore, the teeth are that of a Mako. Tiger shark teeth are very distinct; they resemble a cross between a dagger and a saw blade.

Continuity: At the start of the film when the man is trying to remove the licence plate from the sharks mouth you see a shot of him holding on to the fin on the huge shark from above the water. you can see the man is a good bit away from the mouth of the shark yet when we see the underwater shot he is just finger tips from the license plate.

Continuity: Look carefully at the licence plate when Blake removes it from the shark's mouth.   It bends and flexes as though it's made out of rubber or even cardboard.  Of course in the next scene when he throws it on the walkway, it's an ordinary licence plate.

Visible crew/equipment: When Samuel L Jackson is talking to Carter about the diving mask, a light screen is reflected in his glasses.

Visible crew/equipment: After Preacher says "Feeding time" and the camera moves toward the window, you can see the camera's shadow down in the left corner of the screen.

Continuity: When we first meet Preacher and he is feeding "Bird" some cream off his finger, the amount of cream on his finger changes between shots.

Continuity: When Samuel L Jackson is talking to LL Cool J for the first time, LL Cool J's facial expression changes instantly.

Continuity: When Preacher says "Leave that to the white folks, brother" to Franklin you can see that Preacher looks rather serious. When it cuts, he is smiling.

Continuity: When Blake and Dr Susan McAlester (Saffron Burrows) emerge to survey the damaged research facility, you can clearly see coastline in the background, although earlier in the movie we see a weather map showing the facility clearly way out in the the ocean.

Revealing: As Carter is swimming in the cage under water there is a frontal view of him where you can see the shadow of the camera moving down in the right corner of the screen.

Continuity: When the shark is brought up to put the needle in his head he bites off the guys arm leaving only a bit left there, yet when they are wheeling him to the helicopter you see that he's got more arm than before.

Revealing: When the sharks first attack and bite off the man's arm - you can clearly see his arm under his shirt as he's scrambling away from the water.

Continuity: When the shark first smashes the glass with the gurney carrying the man who was first bitten who failed to escape on the helicopter, he releases the gurney about 50 feet away from the glass. How could the gurney maintain its speed underwater?

Continuity: Throughout the film, people's clothes get drier/wetter instantly. Most noticeable after Whitlock is attacked and rescued by the helicopter - everyone gets soaked but inside are dry.

Continuity: When Preacher is talking to the Lord about his wrath, he is in a wide area of the corridor with "Sub Level 1-A" written on the wall behind him. In the next shot he is approaching the wide area with the sign again.

Visible crew/equipment: As Preacher and his parrot are about to go up the stairs to a higher level, you can see a wire attached to the parrot.

Visible crew/equipment: When Preacher's bird flies off, you can see the shadow of someone at the far end of the corridor on the floor. Since no-one else is around, this has to be the trainers shadow to whom the bird flies.