This full-colour field guide to the marine life of coastal British Columbia, Alaska, Washington, Oregon and northern California is perfect for divers, boaters, beachcombers, and snorkellers of every experience level. The concise handbook is a ready reference to the 420 most common species that can be observed along the west coast. The shorelines of Alaska, British Columbia, Washington, Oregon and northern California are so generously populated with marine animals and plants that divers, beachcombers, whale watchers, naturalists and biologists from all over the world come here to enjoy the natural wonders of the coastline. The book is designed for everyone from the expert biologist to the weekend naturalist and is a ready reference to the 420 most common species, the fascinating local sponges, jellyfish, crabs, shrimp, barnacles, clams, snails, seals, fish, whales, sea algae and hundreds of other living things that can be observed and identified without being disturbed. This accessible full-colour field guide is arranged for quick identification with colour-coded sections, photographs of all species -- most pictured in their natural habitat -- and comprehensive but concise information on size, range, habitat and facts of interest about each species. With a glossary, checklist, reading list and full index included, this is the only book you will need to identify and learn about the diverse marine life you are likely to encounter while exploring the waters and seashores of the Pacific Northwest.