Pacific Ocean

The Pacific Ocean (as it is known on Earth) or the South Sea (as it is more mysteriously referred to by Aslan, in Narnia) is by far the largest body of water on Earth, the original homeworld of all humans. An unamed island existed in this ocean that had permanant inhabitants, who their ancestors had setteled there from elsewhere in the ocean in Pre-historic Ages. However, much later it was invaded by pirates of unknown origins, who killed all the natives save from the woman between child and elderly age, who they took as their wives.

During the Early Ages of Narnia, a group of 12 pirates on the island where exiled by their own and were unintentually transported to the desolate land of Telmar in the Narnian world. They overran the small Calormene colony that existed in Telmar at the time and forcibly bred with the Telmarine men and women, making a new, fierce Telmarine race.

After the Narnian Revolution, a majority of these Telmarines were sent back to Earth on the isolated island in the Pacific Ocean, in which by then the pirate race had died out. According to Aslan, the Telmarines weren't allowed to go through that "doorway" again.