Sewage effect on ocean acidification and marine animals
Wastewater coming from land are the main source of pollution and the hardest threat to the Mediterranean. Sewage coming directly or through rivers spilling into the sea. Source sewage and household wastewater industries, partially purified or did not undergo treatment at all. Chemically wastewater that contains organic material and may contain bacteria and viruses that cause diseases. Industrial wastewater reaching the sea also contain acids, minerals, and heavy metals such as mercury, cadmium, arsenic, copper, lead, nickel and zinc. These materials are highly toxic to animals and plants even at very low concentrations.
In coastal watersheds, some industries discharge their wastes directly to the ocean. Like industries located inland, these industries must first obtain a permit under the Clean Water Act. Industrial pollutants also can directly enter the ocean by accidental spills or intentional dumping at sea.
Industrial chemicals can adversely affect the growth, reproduction, and development of many marine animals. Pollutants are appearing not only in the Pacific, Atlantic, and Indian Oceans and their marginal seas, but also in the more remote and once-pristine polar oceans.
these are some pictures of sewage on it's way to the sea.
this is a picture of a dead fish in Kiryat Haim Beach- Israel. this area is very known of it's large number of industries. the beach was once closed because it was polluted.