Continuity mistake: When Debbie is killed in the hammock, in all shots of her, the quilt covering the hammock net has patterns sown on it, such as flowers. However, in the closeup of Debbie as the knife comes through her chest, the quilt covering the hammock is the same one as before, however you can now see it is suddenly the other side of the quilt. (01:02:25)
Continuity mistake: During the opening credits, Kristen is making a Papier-mâché house, and in the process, her hands become covered in mixture. However suddenly both her hands are completely clean. (00:02:10)
Continuity mistake: When the man drives his car into the cornfield and hits the boy with his vehicle and rescues the mom and her son they run out of the cornfield and back to the house. After the house catches on fire they run outside and his car is parked in the driveway.
Continuity mistake: In the opening, the camera zooms in on an eye that is a very light greyish blue. The camera then cuts to a man lying on the floor. The implication is that it's this man's eye. However, the man's eyes are brown.
Continuity mistake: When Jonas is swimming the tracking gun out to where the Meg is circling, he dunks his head under water to look for the shark. When he surfaces, his earpiece has changed ears. When they cut back to him, it's moved back to the correct ear.
Continuity mistake: At Susie's locker, when Ray first approaches her, she is startled and closes her locker door almost completely, but not quite. In the next shot, the door is completely shut without her having touched it.
Continuity mistake: After Tamara comes out of the the shower she is completely dry. (00:36:00)
Continuity mistake: As the priest descends down the rope ladder into the church for the first time he is handed a lantern by his friend. In the next shot the camera is looking down and you can see that the friend is holding the lantern. Then the next person goes down the same rope ladder and the friend is not holding the lantern, where did the lantern go?
Continuity mistake: In the first successful teleportation of the baboon, there is one scene where Brundle's hands move from being straight to folded in just one shot.
Continuity mistake: The male lead is seen reading an article in the newspaper, the headline of which says "serial killer arrested at Pendleton University," but when he reads the headline aloud, he mentions the professor that killed students at Alpine University, which doesn't match the headline from the paper he's reading.
Continuity mistake: When the shark is brought up to put the needle in his head, it bites off Jim's arm, leaving only a bit left there, but when they are wheeling him to the helicopter you see that he's got more arm than before. (00:33:50 - 00:35:25)
Continuity mistake: When Ana hands over the file to Cora, Cora grabs the file on the side. When it cuts she grabs it on the top of the file. (00:01:20)
Continuity mistake: When Denzel Washington is injected with the tracking device,it is injected behind his ear. But later, when he looks at his cop friend and says something to the effect of "Get my gun", the band-aid is on the side of his neck.
Continuity mistake: When Seymour tries to kill the plant he pulls a gun, the gun is a six shooter, the plant grabs the gun and fires at the guy, then he fires some more, in total the plant fires 9 shots with a six shooter...
Continuity mistake: As Brenda leaves the table asking "Does anyone need anything?", we see Bobby sitting by the table. When it cuts Bobby suddenly got something between his lips which weren't there before.
Continuity mistake: When Lionel's mum gets bitten at the zoo, the colour of her sleeve material changes from black/dark blue to light blue. (00:17:45)
Continuity mistake: In the beginning, when Mike and Jody raise the hood on the car, Jody's hand holding on to the hood alternates between his right and left hand over three shots. (00:13:10)
Continuity mistake: In the scene where Jessica is in the shower crying and the power goes out, she gets out, puts on a white t-shirt and goes walking around the house. When she walks through the garage door and grabs a hammer, there is blood on the front of the t-shirt (right at or a little lower than her waist and looks like someone grabbed the shirt with a bloody hand). Where did it come from? She didn't run into anything or anyone. [There's a deleted scene showing her step on a piece of glass. She gets blood on her hands when she pulls the glass out, then presumably wipes her hands on her shirt. Still a mistake, as removing that scene means the blood appears from nowhere, but there's the reason.]
Continuity mistake: When the windows on Nick's truck are smashed, Elizabeth has protective gloves on when she covers her face from the glass, they are then gone when the truck comes to a halt.