The Sea of Monsters by: Rick Riordan

Danger is at every turn as Percy Jackson and his friends try to steal the golden fleece. Life has been crazy for him ever since he found out that he was a half-blood. With his friends Annabeth, daughter of Athena, and Tyson the cyclops, he must go to the most dangerous place in the ocean- the Sea of Monsters (a.k.a. the Bermuda Triangle). However, the dangerous cyclops that owns the fleece won't give it up easily, and their cousin is out to kill them. -AbdurRahman