Worms in Motion

Worms in Motion shows why some of the simplest animals on Earth are among the most revealing. In clear, accessible language, Nora F. Mercer explains how worm-like bodies help scientists investigate the deep history of animal life, from the earliest movements to the origins of body plans, symmetry, and support structures. Rather than treating worms as biological footnotes, this book places them at the center of evolutionary science, where their movement, anatomy, and diversity illuminate how complex life emerged. Readers will learn why the term "worm" is a useful but imperfect label, how different worm-like animals fit into the animal family tree, and what crawling, burrowing, and body organization can tell us about ancient ancestry. Written for curious general readers, biology enthusiasts, and students, this is an engaging introduction to evolution that makes big scientific questions feel vivid, concrete, and alive.