Corrected entry: 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.
Corrected entry: When the shark comes near Michael's scientist friend under water, it doesn't attack him. A few shots later, the shark is biting the wood. It shows blood in the water. Where did the blood come from? No one got killed.