From the back cover:

Just a few islands in a planetwide ocean, Thalassa was a veritable paradise - home to one of the small colonies founded centuries before by robot Mother Ships when the Sun had gone nova and mankind had fled Earth.

Mesmerized by the beauty of Thalassa and overwhelmed by its vast resources, the colonists lived an idyllic existence, unaware of the monumental evolutionary event slowly taking place beneath their seas...

Then the Magellan arrived in orbit carrying one million refugees from the last, mad days on Earth. And suddenly uncertainty and change had come to the placid paradise that was Thalassa.

Look for this book on the book shelf at the Farmer's Market. It was a great idea to setup it and I have been very pleased to not only find some good books (I love Dilbert books and Sci-Fi) buy also to leave some there as well. None have phoned home yet, but I am holding out hope. At least I have observed that someone found them interesting enough to take.