Marsupials are mammals that have a pouch or a fold of skin called a marsupium in which their young are protected, carried, and nourished. Almost all species of marsupials live in Australia, although some species live on land and others live in trees. Young explorers will learn about the early stages of marsupials' life cycle and the habitats in which they live. Captivating photographs draw readers in and fun facts maintain their attention throughout this learning experience.