Eraystor Bay was a bay located in the southern portion of Emerald Island, connected to Darcos Sound and Dolphin Reach. It formed the main sea route to the city of Eraystor, the capital of the Princedom of Emerald. (OAR)

In May YOG 892, the Eraystor Bay Incident occured near Callie's Island: one of the first Church vessels to be engaged by Charisian forces was forced to strike its colours. (BSRA)