This book is intended for students, researchers and farmers or any layperson interested in earthworm science. This book is the most comprehensive work available on earthworm ecology. It includes importance of earthworms in breaking soil nutrients and soil fertility, their effect on plant growth, the effects of the invasion of earthworms into different regions, vermiculture, vermicompositing, earthworm anatomy, life cycle, different geographical regions, description and impact of earthworms on the environment of various species. This will-illustrated volume is a complete study in earthworm science. Each chapter is well written and illustrated with figures.