Aquatic ecology is the study of various interactions of flora, fauna and ecological characteristics in an aquatic environment. It comprises the study of marine as well as freshwater ecosystems. This book presents complex subject of aquatic ecology in the most comprehensible and easy to understand language. It aims to present researches that have transformed this discipline and added its advancement. This book on aquatic ecology and biodiversity consist of topics dealing with preservation of ecologically significant areas, damage caused due to natural calamities and fishing activities, etc. The book would prove fruitful for researchers and students in the area of sustainable agriculture, natural habitat management and wildlife habitats.