Lakes and wetlands are significant ecosystems that nourish, sustain, and house many of the planets plant and animal species. Though both of these regions are defined by waterboth fresh and salineeach lake and particular type of wetland also has characteristics all its own. This detailed volume considers the formation, composition, and maintenance of these intricate ecological units and the various life forms they support. Dramatic full-color photographs and in-depth profiles of Earths major lakes highlight the beauty and complexity of these regions.