James A. Estes is Professor of Ecology and Evolutionary Biology at UC Santa Cruz. A respected marine ecologist who integrates long-term field observation with groundbreaking theory, Estes is a world expert on sea otters and their integral rolein kelp forest ecosystems. He was senior editor of "Whales, Whaling, and Ocean Ecosystems" (UC Press, 2007) andcoeditor of "Trophic Cascades: Predators, Prey, and the Changing Dynamics of Nature" (Island Press, 2010) andof "The Community Ecology of Sea Otters" (Springer, 1988, pb reprint 2011). He is a recently elected member of the National Academy of Sc...