Sea of Myrth

The Sea of Myrth is a region in Game of Thrones. It lies off the west coast of Essos near the free city of Myr. Its southern shore is the coastline of the Disputed Lands. Its northern shore is the southern coastline of the Flatlands. Tyrosh lies just outside the Sea of Myrth in the Narrow Sea.

In the books
In the Song of Ice and Fire novels the Sea of Myrth is the same.