Professor Hammerhead

Professor Hammerhead is a professor who had disappeared in Shark Tooth Island quest. He was later found with a young boy on a small island known as Castaway Island.

How to find him
You may visit Castaway Island only after calming the Great Booga Shark with the potion from the Medicine Man. The things you need for the medicine man is coconut milk, an old bone and the key ingredient. You must lead them back to safety on Shark Tooth Island.