Some sailors have crafted ships capable of traveling into other realms by sailing any sea. Once one of these sailors has set forth on their journey, the typical murky ocean waters will turn clear and sea life the likes that no other has seen before will appear beneath the ship's keel. This region is coined the "glassy sea" and is a separate body of water only sailed in by realm traversing sailors.

There's said to be a crescent shaped city that resides in the center of the glassy sea. The crescent sits half-way into the water and has towers reaching down toward the surface from the very top underside of the crescent. It is also believed that a huge marketplace of sorts has taken form at the base of the crescent, populated by many creatures and their unusual wares.