This planet has no known canonical name.  While the information presented in this article is canonical, the planet described lacks an official name, thus the title is conjecture.

The Water planet was a planet in the Milky Way galaxy where Water-based life forms resided. The world's Stargate was submerged under the surface of the liquid-like substance that constitutes the life forms. Ancient ruins still stand, encased in the fluid. The ruins show that the water was previously at a lower level. (SG1: "Watergate")

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