Synopsis The ocean water covers 70.8 per cent of Earth's total surface area. The marine ecosystem contains a wide-range of plants and animals. It represents a stable equilibrium of various physical and biological factors. The organic continuity of the system rests on a delicate network of interdependent relationships. The present book is unique amidst the existing literature on marine biology. It contains authoritative and well researched aspects of marine ecosystem. Students, researchers and teachers besides environmental scientists, environment activists will find this work informative and useful.