The Ozmit Sea is a large body of water separating Tal'Dorei and Issylra. Some islands on the sea are home to pirates who attack travelers. The Isle of Glintshore is located in this sea.
The Southern regions of the Ozmit Sea, in particular, are known for their geothermal and sub-volcanic activity. The Hespet Archipelago is located near this volcanic region.
Pike Trickfoot spent four months sailing the Ozmit Sea during the time Greyskull Keep was being constructed.
Vox Machina traveled over the Ozmit Sea via skyship in the episode "Skyward" (1x15), and again in "The Chase to Glintshore" (5x11).
There are eighteen pirate companies active in the Ozmit Sea.