Sci-Fi Planet: Naboo from Star Wars

Naboo (from Star Wars I, II, III, and VI)

Naboo is a fictitious planet in the fictional Star Wars universe with a mostly green terrain and which is the homeworld of two societies: the Gungans who dwell in underwater cities and the humans who live in colonies on the surface.

The main city and capital of Naboo is Theed. The planet Naboo is described as having a porous, plasma-rich interior without a molten core, a rare phenomenon among the planets in the Star Wars universe.