The River Oceanus(Plane)

Oceanus is a massive river which loops into itself and the River Styx. Coming from the Delta Aurus, it flows around and through several planes, such that Arborea, both layers of Bytopia, one layer of Elysium, the base of Mount Celestia, and The Beastlands are all planes scattered across it's twisting shores. Beyond these, the river loops around the roots of The World Tree, and in turn touch Ysgard, before flowing into the Gate Plane Delta Ferra. It's waters are inhabited by many creatures, ranging from dragons and giants to many celestials, particularly many Kirin.