This field guide covers the major resource groups likely to be encountered in the fisheries of the Persian Gulf. These include seaweeds, shrimps, lobsters, crabs, bivalves, gastropods, cephalopods, sharks, batoid fishes, bony fishes, turtles, sea snakes, seabirds and marine mammals. The introduction outlines the geographical, environmental and ecological factors influencing fisheries and the basic components of the fisheries of the Persian Gulf. As an aid to identification to higher taxonomic levels, a pictoral index to families and an illustrated guide to orders and families are included. Each species account provides scientific nomenclature, FAO names in English, local names, sizes, notes on fisheries, habitat and biology, and one or more illustrations. The guide is fully indexed, and a list of related literature is appended. Finally, 17 colour plates are presented.