Comprehensive guide to the identification of the five classes of echinoderms (sea stars, brittle stars, sea urchins, feather stars, and sea cucumbers) of the Florida Keys, Bahamas, and Caribbean. Although coverage is limited to the Florida-Bahamas platform, eighty percent of the echinoderm species that inhabit shallow, sub-tropical, or tropical waters of the western Atlantic north of Brazil are treated, making it a useful guide to the Caribbean region and the Gulf of Mexico. For over 150 species found at scuba depths (less than 100 feet) detailed information is provided about appearance and identification, life history, habitat, and distribution.