Coastal zones form a huge variety of natural environments, providing rich resources to humans. They are the place where active interaction occurs between land-based activities and ocean environments. They have attracted human population to form mega cities and economic developments on the coasts, which in turn has caused tremendous pressures on the natural environment. The Asia and Pacific region is a center of such dynamics. It is home to the world s largest region of coral reefs and mangroves. It accommodates two-thirds of the world s human population and its economic activities have the...