Exploring Eberron: The Thunder Sea

Since Eberron began, I've wanted to explore aquatic civilizations. Merfolk, sahuagin, locathah—these creatures are just as intelligent (or more so) than humans. So what are their civilizations like? How do they interact with one another, and with the world above? With that said, there's more land below the water than there is above, and no reason to think its cultures aren't just as diverse as those of the surface dwellers. Dealing with every aquatic nation of Eberron would be a book in itself. So in Exploring Eberron I focus on the Thunder Sea, which lies between Khorvaire. Aerenal, and Xen'drik. Sharn and Stormreach are two of the ports adventurers are most likely to deal with; this explores the sea that lies between them and what you can find below it.
These two pages provide an overview of the chapter, and I'm not going to expand on it in depth here because the book itself will do that soon. But I can say that these two pages are literally the tip of the iceberg. The Eternal Dominion, the merfolk of Karakala, the Valraen Protectorate, the mysterious kar'lassa—all of these are dealt with in this section, and each provides a host of interesting hooks for adventures or adventurers.
The raw text of Exploring Eberron is complete, but I'm not going to predict a release date until layout is complete. The final text is still going through editing, and with a book of this size layout and review will take time. So we haven't crossed the ocean yet, but we can see land on the horizon!