National Audubon Society Field Guide to Shells: North America

The essential book for beach-combers and divers, this guide explores more than 705 seashells, living mollusks, abalone, periwinkles, conchs, limpets, oysters, clams, mussels, and cockles found on the Atlantic, Pacific, and Gulf coasts of North America and the West Indies. The photographs are arranged by shape and color, making identification quick and easy.