On the long undersea plains of Rebma, there are chasms and crevasses and trenches. When these gaps in the sea floor become particularly treacherous, they become known as Deeps. The Deeps are cold, dark places, home to monsters.
In the Deeps, the light of the surface fades, to be replaced with the ghostly luminescence of sea creatures that hunt in the dark. The cold and pressure of the Deeps are so great that even native Rebmans risk their lives attempting to swim through them. The things that do live there are not sentient races for the most part, but are instead scavengers who seek out creatures that foolishly enter the Deeps, or predators who hunt the scavengers.





