A hydrosphere referred to the combined mass of water comprising a planet's physical geography. The ocean planet Sanctuary, for example, had a moist hydrosphere. This article is a stub. You can help Wookieepedia by expanding it. SourcesEdit The Rebel Alliance Sourcebook, Second Edition Shadows of the Empire Sourcebook Shadows of the Empire Planets Guide Cynabar's Fantastic Technology: Droids Retrieved from "https://starwars.fandom.com/wiki/Hydrosphere/Legends?oldid=8062366" Categories: Legends articlesStubBiologyHidden category: Legends articles with canon counterparts Community content is available under CC-BY-SA unless otherwise noted.