You are! Go to Booga Bay and talk to the guy wearing a grass skirt. He will give you a grass skirt. Find all 3 ingredients for the potion, then go up in the tree (where the coconuts are falling) and the Medicine Man with the mask will talk to you.
(see related question)
To get the ingredients on shark tooth island,you must open the door in the cave,get the 2 ingredients and go back to the native islander and give him the stuff
The island actually requires you to look like a "native islander" (wearing a grass skirt will do).
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 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.
You have to get it from the old islander dude, then shoot it off the "feed your shark cannon" into the sharks mouth:) ur welcome
on the left end on the island, near your poptropica blimp is a guy that gives out shark fins for free. on the right end of the island, there is a girl that gives out grass skirts for free. Put both of them on, go to the guy that will make you the sleep bomb, and he will think you are a native islander.
the grass skirt
Actually, you don't need the mask. You just need the green skirt and the ingredents. If you go past the Acient Ruins area there is a guy giving out green skirts, just get that and you will be fine.
Shark tooth island is when you have to to save people from a giant shark
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.
you go to the beach and get a grass skirt
There are no mermaids in Shark Tooth island, you do go into the ocean