You'll discover the interconnected worlds of a lake: the water; the sand, gravel, rocks, and muck of the bottom; the surface of the lake; the air above; and the shoreline, a belt of land incredibly rich in flora and fauna. Explained, too, are the physical, biological, and chemical processes that determine how many and what kinds of fish live in the lake, which plants grow there, the color and clarity of the water, how ice forms in winter and melts in spring, and much more. Useful advice will help you look out for your lake and advocate for its protection.