Elemental Plane of Water

The Elemental Plane of Water was an Inner Plane or Elemental Plane of the Great Wheel cosmology and the World Tree cosmology models. After the Spellplague, the Elemental Plane of Water collapsed into the Elemental Chaos, mixing with all the other Inner Planes. Water is one of the four elements and two energies that make up the known universe and therefore of great interest to cosmologists. This plane was abundant with life: native creatures born of the elemental nature of the plane itself, sentient water-breathing peoples, and most every species of aquatic life that could survive after being sucked through a vortex from their plane of origin.

Cosmology
According to the Great Wheel cosmology model, the Elemental Plane of Water could be reached via the Ethereal Plane, an adjacent elemental plane, or by an elemental vortex. If traveling through the Deep Ethereal, a green curtain of vaporous color indicated the boundary of the Plane of Water's Border Ethereal region. Once in the Border Ethereal, a traveler could observe the Plane of Water and be detected by its denizens. Using the spherical model, this plane was adjacent to the para-elemental planes of Ice and Ooze and the quasi-elemental planes of Steam and Salt. Elemental vortices could occur wherever a high concentration or nearly pure form of an element was found, and could be temporary or permanent. Vortices to the Plane of Water could often be found in the deepest parts of the seas and oceans, in clear underground lakes, or as surface whirlpools in any large body of water. Temporary gates could be created by the plane shift spell or the abilities of high level druids.

As described by the World Tree cosmology model, the Astral Plane connected all planes with the Prime Material Plane and the Ethereal Plane was only used for journeying between locations on the Prime. The Elemental Plane of Water was not connected or coterminous with any other elemental plane. The spell astral projection could be used to reach the Plane of Water via a dark blue color pool. Additionally, the gate and plane shift spells could be used to open a temporary portal to this plane.

Description
"It is an ocean without a surface. It is domain of current and wave. It is a bottomless depth."

- Manual of the Planes