Ages 7 to 14 years. In this book, kids will delve into the world of the only mammals that spend their entire lives underwater. Vivid photographs and captivating text help kids learn about whale bodies and senses, how whales hunt and what they eat, and how they move through water. Children will also learn about: the different types of whales; how whales live in family groups; how whales communicate; the importance of whales in ocean food chains and webs.