This comprehensive field guide introduces more than 250 species of mollusks - clams, oysters, scallops, chitons and more - whose range extends from Alaska to B.C. to Washington, Oregon and California. Rick Harbo has included detailed descriptions and colour photos of familiar species like the mussel as well as more obscure ones like the checkered hairysnail and the gutless awning clam. Shells and Shellfish of the Pacific Northwest is also packed with information on places to find shells, the importance of shells in Native art and culture, and guidelines on edibility and conservation. A special full-colour section on identifying clams by their siphons or "shows" is a first for shell guidebooks.