"This book features 22 . . . invertebrates that range widely in appearances, behaviors, and habitats. From house centipedes that scurry around humid bathrooms and basements, to . . . monarch butterflies that migrate many thousands of miles, to giant clams that secure themselves safely to ocean reefs, each invertebrate occupies a unique spot in Earth's ecosystems. The species are presented alphabetically by their common names. These animals represent the . . . diversity among Earth's invertebrates"--Pages 10-11.