This volume is a comprehensive, fully illustrated catalogue of the Cartilaginous Fishes of the Indian Ocean, encompassing FAO Fishing Areas 51 and 57, and that portion of Area 47 off South Africa from about 18e42'E to 30e00'E. The present volume includes 8 orders, 23 families, 46 genera, and 117 species of shark-like fishes occurring in the Indian Ocean deep-sea. It provides accounts for all orders, families, and genera and all keys to taxa are fully illustrated. A species representative account of each genus is also provided and includes: valid modern names and original citation of the species; synonyms; the English, French, and Spanish FAO names for the species; a lateral view and often other useful illustrations; field marks; diagnostic features; distribution, including a GIS map; habitat; biology; size; interest to fisheries and human impact; local names when available; a remarks sections; and literature. The volume is fully indexed and also includes sections on terminology and measurements for sharks including an extensive glossary, and a dedicated bibliography.