What planet's core is framed by underwater cities inhabited by the Gungans?

Naboo

Who starred as Batman in Christopher Nolan's "The Dark Knight" trilogy? Which snake mimics the death throes of its prey to avoid confrontation with predators? Who is the main protagonist of the videogame series "Halo: Reach"? What kind of animal lives mainly on eucalyptus leaves? In Christian church services, what term describes the lighting gradually increasing during a special Easter ceremony?