The Truth

I found out that a hammerhead sharks head is shaped the way it is because it improves their ability to find prey. Their wide-set eyes give them a good 360-degree vision on the vertical plane, meaning they an see above and below them at all times. Because their head is so wide, they have highly specialized sensory organs that are able to fit in there. This gives them the advantage to scan the ocean floor more thoroughly for more food. For example, they use their head to attack stingrays, pinning them to the sea floor. More importantly than all these reasons though, the hammerhead sharks head looks the way it does because the unusual structure of its vertebrae is instrumental in making the turns correctly. 

Hammerhead shark

Why does a hammerhead shark's head look the way it does?

I think that a hammerheads shark's head looks the way it does because maybe it improves the way he sees based on position. Also, maybe the head makes it easier for them to pick up things without having their long nose to get in the way.