Direct Discharge and it's following problems
Direct discharge has to do with the discharge of pollutants in to the ocean. It also involves any pollutant of any combination of pollutants that enter the water from any point source. Unfortunately pollutants enter the sea and rivers directly from industrial waste discharges and from urban sewerage. Another source that has to do with marine pollution is inland mining for gold, copper, etc. Most of marine pollution is usually cause by soil which ends un in rivers flowing to the sea. However, some minerals that are discharged in the course of mining can cause many problems, for example: copper, which is a common industrial pollutant. This pollutant causes major problems in the development of coral polyps. Mining has a very poor environmental track record. The United State Environmental Protection Agency, says that mining has cause contaminated portions of the headwater of over 40% of watersheds in the western continental US. Unfortunately most of this pollution enters into the ocean.