This is the eleventh issue in the FAO series of worldwide annotated and illustrated catalogues of major groups of organisms that enter marine fisheries. The present volume includes 8 sea turtle species belonging to 2 families and 6 genera. It comprises an introductory section with general remarks on habitat and fisheries of the families, a glossary of technical terms used, an illustrated key to genera, and detailed accounts on all species. Species accounts include drawings, scientific and vernacular names, information on habitat,biology and fisheries, and a distribution map. Lists of nominal species in the families, a table of species by major marine fishing areas and colour plates follow the species accounts. The work is fully indexed and there is ample reference to pertinent literature.