Continuity mistake: The girl is supposed to be bathing in the sea naked, yet when she emerges the camera shot is a little too low and reveals that she is wearing bikini bottoms.
Continuity mistake: When the girl is talking to the young guy on the beach she has a green shawl around her waist. Then in the next shot a few seconds later it is around her shoulders.
Other mistake: Jenny wears her hair loose for most of the film. All of a sudden she's wearing a hair clip. Where did that come from?
Other mistake: When Jack sits back as the boat stolen by Ramon and Jenny is sinking, he is sipping a coconut with a straw like a cocktail. Where did the straw come from?
Factual error: There is no way that the Jack's cigarettes and cigars could have survived being washed up on shore.
Audio problem: During the Mardi Gras parade, Jenny buys a bracelet from a little girl. She turns to Jack and says, "Look, what do you think?" but her lips only say "Look." (00:02:40)
Continuity mistake: When Jenny first washes up on the island, her wrap is washed up around her torso so that we can see her bikini bottom. In the very next shot, the wrap is down around her legs. (00:01:35)
Continuity mistake: How did Jack and Jenny survive on the island for over a year without getting tanned or Jack not having substantial beard growth?