There are two oceans, mom used to tell me. There is one that is blue-a clean, bright Disney World blue, which simply is the mirror of a clear sky above. But look at the ocean on a cloudy day, she would say, and here lies the green ocean-the true ocean, full of algae and kelp and slimy creatures, evil lurking in the shadows. The One True Ocean is a searing "what happened?" novel driven by suspense and tension when a twenty-something artist returns...