Cartilaginous, cannibalistic, and often cantankrous, the shark family boasts the largest fish in the sea, numerous sets of teeth, a commercially valuable liver (vitamin A), and an earned reputation as man-eating. World distribution, anatomy, known habits (smell, sight, hearing, etc.) are recorded fully, often in the words of experts. One chapter explores ""the shark in legend and sea lore."" Photographs and a more mature, more expanded text (except on evolution) make this a follow-up to Zim's reliable Sharks. It's a comprehensive study which includes representative species and photographs or diagrams for every important aspect.