Revealing mistake: During the scene on the banana boat, the woman who is attacked by the shark quite deliberately shoves her leg into the fake shark's mouth as it missed her when it came up out of the water.
Visible crew/equipment: When Michael Caine and Lorraine Gary are at the Islands street party together, the boom microphone is seen top left. Mind you, it's the only highlight of a pretty drab film.
Suggested correction: I have viewed this several times you have mistaken the boom mic for a large round tree branch.
It looks nothing like branch. This is a real boom mic.
Revealing mistake: When Jake falls into the water by accident and lands in the sharks mouth, you can see a pole attached to the side of the shark used to turn the shark and the body side to side.
Suggested correction: She doesn't put her foot in its mouth. She instinctively tries to kick it or she's just unlucky with where she moves her foot.
Mortug
She put her leg in the shark's mouth. It's too obvious even without slow motion.