Skull & Shackles: Tales of the Fever Sea
The eastern and western shores of this ocean teem with life and activity, while the center, which contains the remains of Azlant, is largely unexplored. This once-calm ocean now has erratic seasonal surface currents due to the ruined continent. Beneath the waves, cities of aquatic elves, merfolk, gillmen, and sahuagin fight for space. Deeper below rests an old aboleth empire. It is there that the Sightless Sea flows upward into the Arcadian Ocean; the aboleths fiercely protect the area with powerful magic and a seemingly limitless number of enslaved soldiers.
The Arcadian Ocean is relatively shallow, and some sailors make a good, but dangerous, living scavenging shipwrecks and Azlanti ruins. These scavengers must evade the eye of the elves who protect these ruins and defend themselves against the creatures that make the ruins their dens. Despite the danger, strange and powerful artifacts from lost Azlant surface from time to time, and many a sailor has retired early from the proceeds of just a single find.