T
he Borean Ocean is a body of saltwater encompassing the entirety of the Northwestern reaches of Odenseye's ocean. It is vast and dangerous, prone to winter storms, and only a few settlements (such as Arvyn) make their homes upon the scattered islands within its maw. Eventually, the depth of the ocean increases significantly as the last of the shallower water dips into various trenches and dark plains, making it near impossible to pass beyond the reaches of places like Arvyn and Flokil.
The Brumal Sea is a region within the Borean Ocean, encompassing the near-shore regions and the continental shelf.