In the Outer Rim Territories' Sanbra sector, one could find Aquilaris, an aquatic planet. This world, previously a successful vacation destination, had an economy that was predominantly based around podracing competitions by the conclusion of the Galactic Republic' Golden Age.
Tunnels beneath the water, mainly built from transparisteel, allowed for transportation between islands and cities. These tunnels offered views of the underwater scenery and marine life brought in from Naboo. During the time of the Invasion of Naboo, Governor Nave Vengaris supported podracing and the related economic growth, transforming numerous former floating cities that were derelict into racetracks. By this period, the old capital had been abandoned and was gradually disappearing under the ocean.
Jason Fry stated that the creation of Aquilaris Minor was to reconcile inconsistencies in the mapping of Aquilaris from Knight Errant with earlier sources.