There's plenty of adventure hidden beneath the gentle tidal cycles and crashing waves of Golarion. Discover the rich ecologies and complex societies hidden in the briny depths of the oceans and seas. In this book you can learn more about merfolk nations, the dangerous sahuagin, peaceful aquatic humanoids, and the aquatic terrors that wage war against them. Dare deadly environments, explore strange underwater cities, and find lost treasures within these pages.
This book also provides a wealth of rules for underwater combat and ways for terrestrial adventurers to adapt to aquatic environs, including new archetypes, feats, and magic items. Dive in to underwater adventure!
Inside this book you'll find:A thorough gazetteer of Golarion's five oceans that explores the various points of interest and conflicts between those who make these bodies of water their home.A look at Golarion's seas and their inhabitants, as well as strange treasures that can be found within their depths.An expansion of rules for underwater combat that clarifies those presented in the Pathfinder RPG Core Rulebook and introduces new challenges to consider.Dozens of new archetypes, class features, feats, spells, and items both magical and mundane that players can use to prepare their characters for adventures beneath the waves.