Inside this volume you'll find the following information ...
- An overview of the Plane of Water, including ways to get there, how to survive, how to get around, and what to avoid
- A look at the powerful entities on the plane, including the Elemental Lords of Water, the Great Padishah of the Marid, Sekolah the shark god, Great Cthulhu, and more!
- 9 new monsters, including the eye of the deep, the locathah, the megalodon, the nereid, and varieties of sea worms!
- Hazards to avoid on the Plane of Water, such as the powerful currents, ice pockets, slime water, and more!
- 14 interesting sites and treasures to be found on the Plane of Water, including the City of Glass, the Great Coral Forest, the Trench of Death, and the Sunken City of R'lyeh!
- Adventure hooks for all tiers of play!
- Random encounter tables for the City of Glass, Sea of Light, Darkened Depths, and the Sea of Worlds!
- Three new player options - the Path of the Reaver for barbarians, the Water domain for clerics, and the School of Hydromancy tradition for wizards!
- A new background - Drowned!