This revised and updated edition incorporates the latest information brought to light by molecular genetics, while remaining accessible to the layperson and handy in the field. Each entry includes an in-depth species description; notes on habitat, behavior, diet and conservation status; accurate illustrations and spoor drawings; and a distribution map. The book also details the whales, dolphins and seals seen along the coast. A classic,comprehensive and highly authoritative field guide that is quite reader-friendly, written in non-technical language.