Tác giả: Douglas P. DeMaster

James A. Estes is Research Biologist with the U.S. Geological Survey and Adjunct Professor of Biology at the University of California, Santa Cruz. He is coeditor of Community Ecology of Sea Otters. Douglas P. De Master is Director of the Alaska Fisheries Science Center. Daniel F. Doak and Terrie M. Williams are Professors of Biology at the University of California, Santa Cruz. Doak is coauthor of Quantitative Conservation Biology and Williams is author of The Hunter”s Breath: On Expedition with the Weddell Seals of the Antarctic. Robert L. Brownell is Senior Scientist with the Southwest Fisheries Science Center.