On the northern Pacific coast, from Monterey Bay to Vancouver Island, zoologist Eugene Kozloff explores the rich variety of seashore life of the northern Pacific coast. Hundreds of plants and animals that inhabit the rocky shores, sandy beaches, and quiet bays and estuaries are described and illustrated with encyclopedic thoroughness. Two hundred and ninety-nine color illustrations and nearly 400 black-and-white photographs and line drawings show sponges, molluscs, crustaceans, comb jellies, flatworms, seaweeds, and many other kinds of seashore life, making for easy identification. The text, cross-referenced with figures and plates, describes in precise terms the size, color, activities, and peculiarities of the plants and animals most likely to be encountered. This book is a greatly expanded version of the author's popular Seashore Life of Puget Sound, the Strait of Georgia, and the San Juan Archipelago, published in 1973. It includes much new material on marine life along the open coast and in coastal bays, and extends the coverage to Oregon and northern California. Years of additional study make this the definitive work on the common seashore life of the northern Pacific coast. Kozloff discusses the geology and geography of the area, and gives the reader "some instant zoology and botany" with which to make the most of seashore exploration. He presents more than 650 species of plants and animals, each in its individual habitat, in chapters dealing with "Floating Docks and Pilings," "Rocky Shores of the Puget Sound Region," "Rocky Shores of the Open Coast," "Sandy Beaches," and "Quiet Bays and Salt Marshes." He also explains the laws and customs governing the collection of biological material and how animals respond to changes in their environment. Clearly and convincingly, he communicates pleasure in, and respect for, diverse marine habitats. This book is not only for the use of professional biologists and students; it will add to the pleasure of all who visit the Pacific seashores, ranging from secluded inlets in the San Juan Islands to the magnificent rocky outer coast and tidal estuary of San Francisco Bay.