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.
Ad blocker interference detected!
Wikia is a free-to-use site that makes money from advertising. We have a modified experience for viewers using ad blockers
Wikia is not accessible if you’ve made further modifications. Remove the custom ad blocker rule(s) and the page will load as expected.