World Sea

From A Wheel of Time Wiki

This is a geographical area of the Age of Legends. The World Sea is described by Ishamael as being analogous to the Aryth Ocean of the Third Age, suggesting that the World Sea was the largest and most extensive ocean of the Age of Legends. Interestingly, at one point an inhabitant of Seanchan also refers to the Aryth Ocean as the World Sea (instead of the traditional Seanchan name, the Eastern Sea), indicating that either the terminology has survived in Seanchan or possibly the writer made an error.

It is possible that it was a large ocean surrounding the continent(s) that the people lived on, like that surrounding Pangaea.