This book introduces readers to the giant clam's biology, taxonomy and systematics, ecological and cultural significance, threats and challenges, and conservation solutions. The highlight of this book is the species identification guide containing descriptions of 12 known giant clam species accompanied by accurate hand-drawn shell illustrations and live photographs of specimens for comparison. Detailed information is summarised in a visual key on the distinctive features of the individual species, with notes on their ecology, geographic distribution, taxonomy and morphology. This book also includes other useful natural history information to spur the reader's interest in these magnificent animals. With the most comprehensive information presented concisely, this book allows readers to identify a particular giant clam readily and confidently, as well as the other species that it may easily be confused with, confirm that the species occurs in a specific area, and access general information on the biology and ecology of the species. It is a valuable resource for researchers, students, the SCUBA diving community, managers of marine resources, and the public.