Chemical pollution

In many parts of the world's whales and dolphins, the ocean side of the hazardous chemical substance found in the fact that huge amounts of them. Especially of their bodies were disposed of. There are various sources of chemical pollution. Like -
Exhaust pipes of the house.
Industrial Solved.
The leakage of waste from households.
Atmospheric particles from the waterfalls.
Domestic waste.
Accidents and crashed into the sea.
Oil product areas to leave.
Waste from mines.
Agricultural waste.
However, the most serious chemical pollutants are persistent pollutants spread. This pollution is entering the ocean food chain and eventually become part of the diet of marine Hisnk animals. Persistent pollutants is the key. Pesticides such as DDT, industrial chemicals, etc..