This contributed volume focuses on the effects of macro, meso, micro, and nanoplastic waste on marine biota. It discusses the threats posed by plastic waste on the flora and fauna in the marine environment. This book will help in understanding different aspects of plastic waste generation, its transportation with different natural and anthropogenic ways, its accumulation at the seacoast, and its impact on marine biota. The book also suggests strategies for saving marine life from threats posed by plastic waste and presents methods to reduce its generation using different strategies. This book is of interest to teachers, researchers, climate change scientists, capacity builders, and policymakers. It also serves as additional reading material for undergraduate and postgraduate students of Ecology, Botany, and Environmental Sciences.