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Land-based sources (such as agricultural run-off, discharge of nutrients and pesticides and untreated sewage including plastics) account for approximately 80% of marine pollution, globally. Marine habitats worldwide are contaminated with man-made debris. Oil spills remain a concern, though actual spills have decreased steadily for several decades.

Excessive nutrients from sewage outfalls and agricultural runoff have contributed to the increasing incidence of low oxygen (hypoxic) areas known as dead zones, where most marine life cannot survive, resulting in the collapse of some ecosystems. There are now close to 500 dead zones with a total global surface area of over 245,000 km², roughly equivalent to that of the United Kingdom. The excess nitrogen can also stimulate the proliferation of seaweeds and microorganisms and cause algal blooms. Such blooms can be harmful (HABs), causing massive fish kills, contaminating seafood with toxins and altering ecosystems.

Litter can accumulate in huge floating garbage patches or wash up on the coasts. Light, resistant plastics float in the Ocean, releasing contaminants as they break down into micro-particles that animals mistake for food. Fish and birds can choke on these particles, get sick as they accumulate toxins in their stomachs, or become entangled in larger debris.

As the world saw in 2010, the Gulf of Mexico deep-water oil spill had a devastating effect on the entire marine ecosystem, as well as the populations that depend on the marine areas for their livelihoods. Smaller oil spills happen every day, due to drilling incidents or leaking motors, negatively impacting birds, marine mammals, algae, fish and shellfish.

SOURCE: UNESCO website

Latest

27 June 2017 - Plastic has been found in basking shark feeding grounds and the habitats of puffins and seals, according to a Greenpeace voyage around Scotland.

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The conference, on the theme, “An Ocean for Life”, will be hosted by the EU in Malta.

Event Date:
05/10/2017 - 10:00 to 06/10/2017 - 17:00
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26 June 2017 - Although there’s some uncertainty in the distribution among Earth’s ocean basins, there’s no question that the ocean is heating rapidly.

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22 June 2017 - Rob Lang gives voice to marine life and what they really think about all that junk we've dumped in the ocean.

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1 June 2017 - Rio de Janeiros stunning landscapes is one of the reasons for its nickname of the Marvelous City or Cidade Maravilhosa. Drastic hills fall into th

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Our ocean is one of planet Earth’s greatest and most important resources. It provides food for four out of 10 people in the world.

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19 June 2017 - Dell has begun shipping its XPS 13 in materials made in part from 

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14 Jun 2017 - The first ever UN Ocean Conference came to a close on June 9 with a "Call For Action", over 1,300 voluntary commitments made to support ocean health, and aspirations for a ne

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12 June 2017 - The United Nations Ocean Conference drew to a close with a joint “call to action” issued by member states after a

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12 June 2017 - The Ocean Conference (5-9 June) co-hosted by the Governments of Fiji and Sweden brought an unprecedented show of global unity around the need to tackle the crisis in the oce

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#SaveOurOcean Up to 20 million tonnes of plastic goes into the ocean every year. That’s as much as 3 kilograms per person each year.
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