Polyphemus' Island

Polyphemus' island is an island in the Sea of Monsters. It is where Polyphemus and his sheep live. It also contains his cave and The Golden Fleece which he 'stole from heroes long ago'.

The Sea of Monsters
Polyphemus' island first appears in the second book, Sea of Monsters. It is in the Sea of Monsters in fact. It is a beautiful island which lookes like a paradise, apart from the scary crevice separating the cave and the non-man eating sheep from the beaches and the man eating sheep. Polyphemus the Cyclops lives there. Grover is held captive in his cave and later Clarisse is held captive too.

Polyphemus
Polyphemus the Cyclops lives in a cave on this island. He captures Grover in "St. Augustine's Bridal Boutique" and Grover pretends to be a female Cyclops so Polyphemus won't eat him (Polyphemus can't see very well because Odysseus, the hero partly blinded him by jabbing him in the eye). When Polyphemus discovers that Grover is a satyr, he decides to eat him and marry Clarisse instead.