Continuity mistake: When Chris and Martin fly back to the Tortuga with their Buzz Bikes, suddenly in one shot Chris is sitting on Martin's bike and Martin is sitting on Chris' bike. In the next shot, they're back in their original places.
Chris gets on the zip line and hooks up. Martin just stands behind him, not hooked up to the zip line. Chris zooms off down the line chasing the hummingbird. A few seconds later, Martin is suddenly on the zip line also and right behind Chris.