Dive into Earth's oceans and discover the world of the sperm whale! Stunning, full-color photos show these large-headed whales above water and below. A range map reveals where these special sea creatures can be found. A labeled diagram helps readers identify flukes, flippers, and more. The sperm whale's size, habitat, senses, threats, diet, reproduction, and unique behaviors are also introduced. Plus, find out about the spermaceti organ that gives these whales their name. Learn about the long, deep dives sperm whales are capable of, and discover how they communicate. A facts page, bolded glossary terms, and an index support the engaging, easy-to-read chapter text. Checkerboard Library is an imprint of ABDO Publishing Company.