Wear a grass skirt. (They are free at Booga Bay.)
Wear a grass skirt (free at Booga Bay). He will think you are a native.
Shark Tooth Island
you have to climb up the tree to the medicine man but you have to have a native mask on our he wont talk to you .He will tell u that he has something to make him go to sleep but you have to go get the ingredients for him . After you have the medicine take it to the dock and put it in the feeding cannon the shark Will eat it and fall asleep. :)
The medicine man makes you a potion in a coconut. Shoot it at the shark and it will fall asleep. Swim to the island on the right.
The medicine man doesn't trust outsiders, so you have to pose as a native islander. Get a grass skirt from the Booga Bay vendor and wear it when you see the medicine man.
Wear a grass skirt. There are free ones from the vendor at Booga Bay. The medicine man only does work for "native islanders", so you need this disguise.
The Medicine Man (atop the bamboo "tree" next to the ruins) will only talk to native islanders. You can pose as one by wearing a grass skirt, free at Booga Bay.
The medicine man (atop the bamboo "tree") will help you if you pose as a native islander. Get a free grass skirt from Booga Bay and wear it.
the grass skirt
To look native to the medicine person
At the beginning of the island there is a stand that will give you a shark fin, and also near the end of the island there is a stand that will give you a grass skirt. If you put on both items the native islander will talk to you.
The mission on Shark Tooth Island is to rescue the boy who is stranded in an island in Booga Bay (far right of the island) by the giant shark Booga. The solution is to gather the ingredients for a sleeping potion, to be mixed by the island's medicine man. (see related question)