It is a well-known fact that nearly 70% of the earth is filled with water in the form of different kinds of water bodies such as oceans, lakes and rivers etc. All these water bodies, especially oceans and seas,  form an indispensable part of our existence as it has key roles to play in our everyday life. This factor of indispensability has not only helped us tremendously, but has also resulted in the exploitation of the oceanic resources without any second thoughts.

The careless human intervention has badly affected the oceanic ecosystem, threatening the existence of several other species on earth, including human beings. Accidents such as BP oil spill and Samarco dam collapse are the striking instances to see how badly the human activities can destroy the rich ecosystem of water bodies.

=> Dumping solid wastes in rivers ,lakes and oceans results in water pollution.