The back cover may be the most useful page in it: a color-coded chart of all 171 species in the book — chitons, limpets, sea stars, sea slugs, crabs, seaweeds — each with a page number, so the identification can happen while you are still crouched over the pool. Ian Sheldon wrote it for Lone Pine's field guide series, flexible covers and all.
Clean and glossy apart from a small reddish stain on the red spine band.
