A turbulent sea to the west of the Western Sea, known for surrounding the Isles.
It is considered all but impossible to sail to and from it by normal means, given its unpredictability, prevalence of sea storms and the Teeth, a wide stretch of ocean with jutting stone pillars that sits as a proverbial wall on the east side of the Roil itself.
Sailing Lore
Many sailors avoid the Teeth entirely by travelling in a wide berth around them, making trips out exceedingly long. There are rumours that there is a path through them, but a small ship is needed, and someone with enough grit and know-how to navigate.