Plane of Water

The Plane of Water is a truly immense spherical shell of salt, fresh, and brackish water. On one side is the Plane of Air, which provides most of the light for the plane, and near which most of the plane's fresh water is located. On the other extreme is the Plane of Earth, where the waters of the plane near total darkness and their highest level of salinity. While most of the plane consists of liquid water, intrusions from neighboring planes provide solid ground within the oceans. These include masses of rock fallen away from the Plane of Earth, masses of ice from the Plane of Air, and the ruins of lost cities from other worlds. In some places, spires of solidified magma project through the Plane of Water entirely and into that of Air. These areas of solid ground are often home to the plane's settlements.

Where the Plane of Water borders the Plane of Air, storms often sink into the waters to form enormous whirlpools and waterspouts. At the border with the Plane of Earth, the water becomes tinged with sediments and thermal vents shoot jets of mineral-rich water and superheated brine into the oceans of the plane.

A number of unusual locations and phenomena exist within the Boundless Sea, such as the Forest of Oils, a vast collection of floating spheres composed of diverse chemical substances; the stars Axtarr, Firros, and Palixna, spheres of flame of unknown origin that hang unquenched in the waters of the plane; the Fulgurate Marble, a moon-sized transparent sphere home to a mysterious civilization; and the Jungle of Worms, a three-dimensional forest of coral and sea anemones.