When Jamie and her boyfriend go for a swim at the isolated beach, she enters the water wearing a small pair of jeans shorts over her bikini bottom. When she returns from the swim, the jeans shorts are gone.
When Rick leaves the beach to go water the plants, you can hear the sound of him urinating. When the camera takes a shot from the right, the sound can still be heard, but no urine is seen leaving his body. The stream should be visible from this angle.
When Lovegrove is in the field and spots the abandoned truck, he has no sunglasses on. When he climbs up on the truck, he has sunglasses on, then when he climbs down from it, he again has no sunglasses on.
When the bad guys are chasing Jack in the forest, the Asian man's weapon from the front view is firing, but from the view behind, it is not.
When the man with the machete is chasing the girl, after he first emerges from the water, he is wet to his waist, but in the next scene, he is perfectly dry.
The ghost orchids in the film look nothing like the real ghost orchid.
The first girl victim in the film fails to show arterial spurt, despite losing a leg below the knee.
When Milo fallows Jamie down the path away from the secluded beach, a Tiki torch can be seen along the path behind Milo when he stops to catch his breath.
Trying to escape, a character runs to a road where a 2008 Chrysler Town & Country is waiting on the road; he tries to start it twice with no luck. He then pops the hood, but before he can even look, another character steps out of the jungle and says "It's no good, they took the distributor cap!" Huh?? Did someone transplant a 1960s engine into that 2008 truck? Modern cars do not use distributor caps and have not done so for more than 20 years. Oops.
There was one piranhaconda in the film, then two, then one again.