The Sea of Monsters (also known as the Bermuda Triangle to humans) is a sea in which Polyphemus, Scylla and Charybdis, the Sirens, and other monsters and godly things, like Circe, the sorceress, live in. Much like Olympus and the Underworld, the Sea tends to move around following the light of the Western World. It was originally in the Mediterranean Sea in the ancient times. Because of its large triangular size, the Mist hasn't been able to hide it completely and the area has become famous among mortals because of the planes and ships that disappear there. The Sea of Monsters is known to mortals as the Bermuda Triangle.