Dagon is the demon prince of sea creatures. He is worshipped as a deity by legions of sahuagin, locathah, skum, lizardfolk, tritons (those that have accepted the ways of evil), and some merfolk. His Abyssal lair is not unlike the Elemental Plane of Water in that it is composed entirely of water. Pockets of air, though, are rumored to be trapped in invisible "bubbles" throughout his lair (so as to allow the non-water breathing demons to exist comfortably). Dagon makes his home in a great underwater iron citadel called Thos located in the deepest recesses of his home plane.