The medicine man will mix the ingredients for you. Collect the coconut milk, bone, and key ingredient and climb to his hut atop the bamboo pole (watch for falling coconuts).
He will only work with "native islanders", so you must get a grass skirt from Booga Bay to disguise yourself.
(see related questions)
You use the cannon
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.
Fire it in the coconut cannon at Booga Bay. No matter where it lands, he will swallow it, and you have succeeded.
When you have collected the three ingredients (and the grass skirt) the Medicine Man will mix them into a coconut for you. Use the giant coconut cannon at the beach, and the shark will swallow the potion and fall asleep.
Someone has built a "coconut cannon" to feed the giant shark. Get the medicine man to mix the three ingredients into a coconut. (see related question)
The sleeping potion for the shark requires three ingredients (coconut milk, bone, key ingredient). Find them and take them to the medicine man (in the "tree" next to the ruins), who will mix them into a coconut for you to feed to the shark. (see related question)
You have to gather three ingredients and mix them into a sleeping potion. There is a medicine man who will mix them for you, and you can feed it to the shark in a coconut. (see the related question)
You can't swim to the island while the shark is active. But you can get the ingredients to make a potion that will put him to sleep. Gather the three ingredients (coconut milk, bone, and key ingredient) and take them to the medicine man, who will mix the potion in a coconut to feed the shark. Wear a grass skirt and he will help you. (see related questions)
Find the three ingredients for a sleeping potion, and have the medicine man mix it and put it in a coconut. Feed it to the shark. (see related question)
it is on shark tooth island
Well if your asking about Shark Tooth island he is on the island past the coconut launcher. Get all the ingredients for medicine man and give them to him. He will make a potion in a coconut, go the the coconut cannon and shoot the potion coconut in the water and you'll see the shark come and eat it. He will fall asleep and you can cross. There you will find the son and Dr Hammerhed
You just go to FEED THE SHARK and feed one coconut to the shark and that will feed the shark the calming potion and then walk over the water and then talk to one of the people.Then you talkto the crying lady then she will give you the island medallion