Instructions
Move right on the island toward the Ancient Ruins. Skip the short room and go all the way right until you see a sign saying "Booga Bay." Continue right toward the bay. Speak to the first guy you see to receive a grass skirt and put it on. Return to the Ancient Ruins. When you see the large stone in the middle, jump over it and push it right so it ends up next to the palm tree. Jump onto the rock and jump again to grab a vine. Continue up the vines to the top of the tree and talk to the medicine man.
Get back on the ground and walk left until you reach a temple. Go inside the temple and jump down until you see a moving platform to the left, and jump onto it. Keep going left until you see a panel, which you need to click on. Count from the left and press the third, fourth, sixth and seventh teeth and then click on the large triangle to open the door. Go inside and slide down the vine. Go left, jump over the shark statue and jump down. Pick up the bone off the ground and head back to the right to the shark statue. Jump on the platform and go left until you see a chamber with a green vine. Go up the vine and run across the screen to an urn. Jump on the urn and get a Key Ingredient. Leave the chamber by jumping and climbing up the vine.
Go right and speak to the man outside Coconut Cafe to receive an ingredient. Go back to the medicine man on top of the tree at the Ancient Ruin and talk to him. He will give you a potion. Jump down and go to Booga Bay and move right until you see a sign saying "Feed the Shark." Click on the cannon to activate it, point it up, and click again to launch a coconut. Cross the river and get to the small island until you can go only left or right. Go right and speak to Professor Hammerhead. Head back to the large island across the water to see a crying woman, who will talk to you. Professor Hammerhead will give you a gold medallion, which completes the Shark Tooth Island.