Ocean Action Hub

Atmospheric carbon dioxide (CO2) levels are rising as a result of human activities, such as fossil fuel burning, and are increasing the acidity of seawater. This process is known as ocean acidification. Historically, the ocean has absorbed approximately 30% of all CO2 released into the atmosphere by humans since the start of the industrial revolution, resulting in a 26% increase in the acidity of the ocean (average global decrease in ocean pH of about 0.1 unit).

Ocean acidification makes it more difficult for the numerous organisms that fix calcium carbonate in their skeletons and shells to do so, and can also impact metabolic and reproductive processes in many marine species. By impacting marine ecosystems at multiple levels, it has significant potential to affect food security and livelihoods that depend upon healthy marine ecosystems. The economic impact of ocean acidification could be substantial.

Reducing CO2 emissions is the only way to minimize long-term, large-scale risks from ocean acidification (IGBP, IOC, SCOR, 2013, p. 1).

Latest

15 Mar 2018 - Ocean acidification cut the growth of a coral reef on Australia's Great Barrier Reef by one-third, according to a study published Wednesday in Nature.

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The East Asian Seas (EAS) Congress celebrated 25 years of partnerships for healthy oceans, people and economies. 

Event Date:
27/11/2018 - 09:00 to 30/11/2018 - 18:00
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14 Mar 2018 - Uncertainties around carbon emissions will make climate agreements tough to enforce. The answer floats in the seas.

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13 Mar 2018 - Further improvements in data-gathering technology could improve forecasting of extreme weather events.

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8 Mar 2018 - Female free divers spend their time exploring parts of the ocean most of us never see. Now, they're fighting to save it.

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In order to avoid disaster–and to ensure a sustainable supply of fish for the future–far more of our ocean needs urgent protection.

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6 Mar 2018 - Rising sea levels are threatening to put the Pacific island nation of Kiribati underwater, potentially turning its citizens into "climate refugees."

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22 Feb 2018 - The Nippon Foundation Chairman Yohei Sasakawa announced at a press conference today that The Nippon Foundation – GEBCO Seabed 2030 Project is now operational.

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31 Jan 2018 - An onslaught of bottles, bags and other litter makes reefs 20 times more likely to get sick. Scientists are scrambling to learn why.

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30 Jan 2018 - Coral reefs are critically important to the world but despite the ongoing efforts of scientists and campaigners, these stunningly beautiful ecosystems still face a 

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26 Jan 2018 - Plastic is one of the biggest threats to the future of coral reefs after ocean warming, say scientists.

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25 Jan 2018 - Australian research body CSIRO announced that its research partnership with

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