"Filled with concise information and accurate illustrations, this terrific field guide will be a handy, quick reference for the layperson and serious naturalist on boat trips off the West Coast of the United States. No other useful guides for this region deal with both marine mammals and seabirds in the same book."--Sophie Webb, coauthor of "Field Guide to Marine Mammals of the Pacific Coast"

"Intended for beginner- and moderate-level naturalists as well as tourists on whale-watching and birding trips, this field guide presents a fresh, new format. Images are nicely formatted and the text is clear, light, and humorous while being informative and scientifically accurate."--Peter Pyle, author of "Identification Guide to North American Birds"

Steve N.G. Howell is an international bird tour leader with WINGS and a research associate at the California Academy of Sciences. His other books include Petrels, Albatrosses, and Storm-Petrels of North America and The Amazing World of Flyingfish (both Princeton). Brian L. Sullivan is eBird program codirector and photographic editor for Birds of North America Online at the Cornell Lab of Ornithology, and a coauthor of The Crossley ID Guide: Raptors (Princeton). Howell and Sullivan are the coauthors of Offshore Sea Life ID Guide: West Coast (Princeton).