Ecotoxicology is an umbrella science that integrates concepts from various disciplines like molecular chemistry, earth sciences, environmental engineering and environmental chemistry in order to understand the interactions of toxics with the ecosystem and develop strategies to reduce the negative impacts. Heavy metal contamination, ocean acidification, soil poisoning are some of the crucial factors that fueled the research in this field. This book includes some of the vital pieces of work being conducted across the world, on various topics like standard toxicity tests, ecotoxicological evaluation and biosensors. It is a complete source of knowledge on the present status of this important field.