Continuity mistake: When the Teens land in Africa their parachutes land on the ground. We see a shot of Africans and then back to the Teens. The parachutes have disappeared.
Continuity mistake: In the scene where Henry is pouring the whiskey into the cups, the bottle is half empty when completed. Next scene Henry is nursing the bottle which is now almost full. (00:06:00)
Visible crew/equipment: Toward the end, as the two Species females are fighting, one jumps from an overhead beam. As she descends, the black safety cable for the stunt person is visible.