内容简介：
Turtles are the oldest reptiles that still exist on Earth today. They've been around for about 200 million years, since the days of the dinosaurs Some turtles are popular pets. Others do invaluable service for the environment-Many are endangered. All will fascinate students and get them excited about life science. Complete with close-up, color photography, maps, and special turtle facts, this series will be a welcome addition to any library.