Nethersea

Deep under the eastern Llyrnan Sea lies a cavern of such size it dwarfs most surface empires. The cavern is home to the Nethersea, a huge subterranean body of water. The Nethersea is the largest known expanse of water in the Underworld. It is home to numerous aquatic creatures, mostly aberrant but also things such as trolls and Undead. There is also a large presence of sahuagin which continually clash with the Drakari of Shaansu'ul.