All this was happening depending on if the shark was out of the water or not. It appears that the shark's teeth were awfully crooked when in the water, perfectly straight when out.
This is actualy correct. When a shark is not moving at high speeds or when he/she/it is about to attack, their teeth move into "chew mode", or move out to be able to bite. Otherwise it's teeth are bent inwards to keep speed up and to keep two rows of them out of the way.