You do nothing. Its one of the items that you'll have to give to Zeus.
You go to the left corner from the pearl and you go in.
under they sea at Triton's palace
Look in a clam. That's where pearls are made.
a grain of sand gets caught in a clam then it grows with water into a pearl
Your quest on Mythology Island is to give Zeus the 5 items;the rose, the whisker, the scale, the pearl, and the golden ring. To do this, you have to get the apple (to summon Zeus and then actually get the quest).
you find it in the giant clam in the water where it says dive. :)
You have to go underwater which is left to Aphrodite and you have to find a clam. It opens and closes. Try to get the pearl (which is inside the clam) when the clam is open.
Its in the clam in the water maze near the hydra's cave.
TO get to the underworld in Mythology Island,
go to posidens lair and go till u find the clam. be sure to collect air bubbles
Zeus is the god on Mythology Island.
The pearl you need is the giant pearl. Once you use the starfish (from Poseidon's statue in the museum), you can enter the realm and swim through the underwater maze to the cave of the Hydra. Before you enter, get the pearl from just outside the cave.