The Crater Sea is named after the vast underwater crater. The crater itself was caused by the summoning of the arch-demon of Januri in the age of mortals.
The sea is ringed with islands that have been violently up-heaved from the bottom of the ocean during the summoning of the arch-demon.
- To the north the sea encompasses everything up to the Northern Pole .
- East of the Crater sea is the Northern Coast Sea .
- South of the island ringing the sea there are the Miirhys's Strate and Dearaldian Bay .
- West you can find the Sky Peaks waters and Northern Sea .