Enter the ancient ruins and pass the water and passages to the left. Spell the word OPEN on the door and then press the third, fourth and seventh symbols on the left. Then push on the giant nose.
You feed him a coconut filled with a sleeping potion.There are three ingredients for the sleeping potion, and the recipe is in the underground ruins, to be mixed by the Medicine Man (climb up the vine to his treehouse hut) :Coconut Milk (free sample from the vendor when you arrive at the island)Creature Bone (down in the underground chambers of the ruins)Key Ingredient (in the final underground chamber, requires a code to access) (see related question)
The bone and key ingredient are to the far left in the underground ruins. The bone's location is under the large hole with jagged teeth down the sides. The key ingredient is in the final chamber to the left of that.
it is in shark tooth island
Climb back up past the worm statue, go left to find the chamber with the final (key) ingredient,
There are three ingredients for the sleeping potion, and the recipe is in the underground ruins, to be mixed by the Medicine Man (climb up the vine to his treehouse hut) :Carbonated Milk (free sample from the vendor when you arrive at the island)Creature Bone (down in the underground chambers of the ruins, by the spikes)Key Ingredient (in the final underground chamber, requires a code to access)(see related question)
The so-called "Key Ingredient" is in the underground chamber below the ruins. (see related question) The three ingredients are coconut milk (which you get free), the bone of the creature (in a pit in the underground chamber), and the key ingredient near the exit from the buried ruins.
The green "key ingredient" and the creature bone are in the underground ruins, to the far left. Once you have entered the underground chamber, the key ingredient is directly on the path out again. (see related question)
The ruins are just to the right of the first village (Main Street) on Shark Tooth Island.
The caterpillar is now a millipede on the underground statue on Shark Tooth Island. The effect is the same.
it is under the big tooth
You can exit the underground from the Key Ingredient chamber. You will also need the creature bone from the underground pit. You can get coconut milk, the last of three ingredients, if you haven't already. Get a grass skirt from Booga Beach and wear it when you climb up the vines to see the medicine man. He will mix the ingredients into a coconut which you can feed to the giant shark.
Gather the ingredients to mix a sleeping potion, which you use on the giant shark named Booga which is terrorizing the waters around Shark Tooth Island. Professor Hammerhead, a shark researcher, has been trapped on a small island by the shark. Use his research to enter the underground ruins and discover the secret to saving him.