The hammerhead shark has a distinctive head. There are various reasons why the head of a hammerhead shark is shaped like this. There may be more nerves in the head, which helps the shark find its prey. Another reason might be that moving its head enables it to swim better. Its hammer also allows the shark to easily press rays against the seabed and eat them. It may also help it to see better, because the eyes are positioned further apart, which enhances its field of vision.