I have bought both editions of this book, mostly because the first edition got so dog-eared that I wanted a clean one for vacation last year. The book is a marvelous source of information for both the snorkeler and the diver. The authors divide the book into chapters on individual islands, starting out with a brief but interesting history of the island, a topographical description, relative location map, best time to go, weather, and proximity to other islands. They then rate the island's diving locations, awarding from 1 to 5 stars, and provide another larger map visually locating the sites. Each site is described in detail, with info on depth, sea life, currents, visibility, photo ops and difficulty level. As if that weren't enough, they include some (but not enough!) beautiful photos, and end each chapter with yet more info on dive operators (detailed), beaches, other activities, dining, accommodations (with rates, addresses and phone numbers), medical facilities, documentation requirements, currency, driving, local customs, departure taxes, etc. I've been exploring the Caribbean for almost a decade now; I take this compact book with me everywhere. My only complaint: I wish they covered more islands!