The South Seas, a.k.a. Southseas, surround the southern tip of the Eastern Kingdoms and Kalimdor, mostly noted by travelers on the southern coasts of Stranglethorn Vale and the port of Booty Bay.
Regions of the South Seas
Thus far, only Kezan is accessible in-game, and then only to new goblin characters. Kezan has been evacuated by the Bilgewater Cartel goblins due to the eruption of Mount Kajaro caused by Deathwing's reappearance, and the fate of the island remains unclear.
Regions adjacent to the South Seas