Inner Sea
The Inner Sea is the large body of water bounded by the North and South Landbridges, the Direlands on the west, and Osteth on the east.
As mentioned in Directions to the Pillars of the Inner Sea, Yaraq was once a port to the Inner Sea where Empyrean Ships docked. Ships have not been seens since the arrival of the Isparians.
(Because the area is uniformly untraveled, Turbine has placed a great majority of the dungeons physically within landblocks in the Inner Sea.)