A quick, accurate and versatile identification manual. By splitting the species into 12 groups according to shape, colour or behaviour/movement, it enables quick identification of any species encountered, Each species is illustrated with colour photos, with information on distinctive features, depth, abundance and distribution, habitat and behaviour, reaction to divers, and similar species. Includes a full checklist. The companion guide on reef invertebrate identification was published in 1992, entitled Reef Creature Identification.