My Mate Mark is a Hammerhead Shark! — Jeanne Willis

Mark the hammerhead shark doesn??? t have it easy ??? unless he wears a disguise, waiters won??? t serve him, and he can??? t go anywhere without people screaming and running away or teasing him. But when a little boy befriends him on a cruise ship holiday, he can see something in Mark that everyone else can??? t??? could Mark be a harmless hero?