Sea of Creation

The Sea of Creation, also known as the Astral Sea and the Astral Plane, is the name given to the extraplanar medium in which all the Planes of the Universe are suspended. It encompasses the entire spherical volume of the universe and can be thought of as the plane of positive energy. The Sea of Creation is defined by the Laws of Creation and is surrounded on all sides by the unknowable expanse of Void -- a maddening realm untouched by the laws of creation, known also as the plane of negative energy.

Other names
Astral Sea, Astral Plane, Ginnungagap
Type
Extraplanar medium
Included locations
Every location of the Universe