Eunaphlan is a mostly continents of swamps surrounded by ooze oceans. The vast swamps and marshes eventually give way to rocky terrain with in the larger continents. Of the few settlements on the planet, most can be found in the swamps and marshes.

The oceans are home to several large archipelagos of rough dark basalt islands, most of them home to extensive collections of fungi and smaller plants, and several with unique species of smaller animals adapted to that specific archipelago.