Science Explorer Animals is divided into 5 main chapters- 1- Sponges, Cnidarians, and Worms 2-Mollusks, Arthropods, and Echinoderms 3- fishes, Amphibians, and Reptiles 4- Birds and Mammals 5- Animal Behavior. this book provides a visual explorations through the use of photographs, illustrations, and charts. It provides inquiry activities, skills labs, and interdisciplinary activities.