Iskalon
this planet was the homeworld of a race of water-breathing humanoids known as Iskalonians. The planet itself had no natural land formations. When the Iskalonians joined the Alliance, they erected great cities on the ocean floor. These cities were named for the city of Pavillion, the first and largest of the cities, and were built to allow the air-breathing races of the Alliance to live with the Iskalonians. However, after the Imperial base on Gamandar destroyed the city of pavillion, the Iskalonians forbade any landing by air-breathing races. This mandate was not recognized by the Nagai, however, who tried to subjugate Iskalon shortly after the Battle of Endor.