This book examines Earth's invertebrates, highlighting a diverse selection of 22 notable species from around the world. A blend of narrative text, authoritative nonfiction content, fact boxes, and vivid photos bring these amazing invertebrates to life. Features include a glossary, online resources, source notes, and an index. Aligned to Common Core Standards and correlated to state standards. Essential Library is an imprint of Abdo Publishing, a division of ABDO.