Chemical Pollution

The deep ocean is subject to chemical pollution from a variety of sources. As well as oil pollution following disasters, the deep ocean receives chemical input from a wide range of sources including run-off from land, waste disposal, pollution from shipping, routine oil drilling and inadvertent dumping.

With increased human use of the open ocean for transport, mineral extraction and disposal, almost all of these sources of chemical pollution are increasing, resulting in greater and greater impact to the deep ocean and its ecosystems. Researching the potential impacts of pollution is of great importance so that the use of natural and chemical resources can be done in more sustainable ways.

marine pollution

marine pollution

Pollution in the deep sea is rarely more dramatic and immediate than that from a deep-water blow-out and the resulting oil spill. Pollution from less sensational sources is also causing widespread impact to deep-sea systems. Chemical contaminants, produced by humans, are increasingly reaching remote areas of the ocean and finding their way into the deep-sea food web. Many deep-sea animals, including fish and octopus, have measurable and sometimes high levels of toxic pollutants.

Life in the deep sea may be less resilient to its effects. Deep-sea organisms are typically subjected to a smaller range of environmental variation than shallow-water organisms and they live in areas that have not previously been affected by many chemical pollutants. The lifestyles of deep-sea organisms may be less conducive to dealing with chemical stress. Although marine pollution has a long history, until the twentieth century most scientists believed that the vast oceans had virtually unlimited ability to dilute and render pollution harmless. Increasing evidence to the contrary, including in the open ocean outside of regional jurisdiction, resulted in the formulation of significant international legislation to counter pollution. These laws have been effective at reducing some types of pollution that could reach the deep sea, particularly pollution from shipping, and regulating other polluting activities. However, despite regulation chemical pollution is becoming a more important stressor to deep-sea organisms and ecosystems.

Marine Pollution

Marine pollution occurs when harmful, or potentially harmful, effects result from the entry into the ocean of chemicals, particles, industrial, agricultural and residential waste, noise, or the spread of invasive organisms. Eighty percent of pollution to the marine environment comes from the land. One of the biggest sources is called nonpoint source pollution, which occurs as a result of runoff. Nonpoint source pollution includes many small sources, like septic tanks, cars, trucks, and boats, plus larger sources, such as farms, ranches, and forest areas. Millions of motor vehicle engines drop small amounts of oil each day onto roads and parking lots. Much of this, too, makes its way to the sea.

marine pollution

marine pollution

“Water and air, the two essential fluids on which all life depends, have become global garbage cans.” – Jacques-Yves Cousteau

Many potentially toxic chemicals adhere to tiny particles which are then taken up by plankton and benthos animals, most of which are either deposit or filter feeders. In this way, the toxins are concentrated upward within ocean food chains. Many particles combine chemically in a manner highly depletive of oxygen, causing estuaries to become anoxic. When pesticides are incorporated into the marine ecosystem, they quickly become absorbed into marine food webs. Once in the food webs, these pesticides can cause mutations, as well as diseases, which can be harmful to humans as well as the entire food web.

Toxic metals can also be introduced into marine food webs. These can cause a change to tissue matter, biochemistry, behavior, reproduction, and suppress growth in marine life. Also, many animal feeds have a high fish meal or fish hydro lysate content. In this way, marine toxins can be transferred to land animals, and appear later in meat and dairy products. People often think that water pollution comes from big factories, but most of the pollution comes from everyday people doing everyday things. This kind of pollution is called nonpoint-source pollution because we cannot point out where it came from directly. There are a lot of videos, documentaries, articles and even websites that caters to this kind of topic. Anyone can browse through the internet to know a thing or two about helping our oceans and other bodies of water. If you want to get these videos, visit multihosters review for more information.