The Demonmaw Sargasso
Due west of ancient Bael Nerath and the islands of Arkhosia lies a vast stretch of the Dragon Sea called the Demonmaw Sargasso. The perimeter of the sargasso is so shallow that sailors can see the black coral that covers the sea floor. After a few miles, these shallows give way as the sea floor plunges into an inky abyss, where the waters are eerily calm. A lucky ship can use oars to cross the sargasso without incident. An unlucky ship finds itself inexorably drawn to a location where the watery horizon dips menacingly into a briny vortex. By the time one sees the vortex, it’s already too late: The hungry Demonmaw pulls the vessel down into its black depths, never to be seen again.