When Holly first hears Carlton's voice from the cave, she stands at about arm's length from the lifeguard. In the next shot, she stands right next to him with a hand on his shoulder that wasn't there before.
When the centipede craws on Matt, it stops near his neckline. But in one long shot, it is on his shoulder.
When Carlton and Stephanie argue while he sits on the bench, she clasps his hand in both of hers. She lets go and he puts his hand on the back of the bench, but in the next shot she is clasping it again.
During the escape, Mitch tells Lea they need to board a chopper, even though he doesn't know about the helicopter yet.