Ocean Action Hub

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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 make 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

UNDP Ocean Advocate, Australian singer-songwriter Cody Simpson, explains what nutrient pollution is and the risk it poses to marine life.

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UNDP Ocean Advocate, Australian singer-songwriter Cody Simpson, talks about the chemical reactions that occur when CO2 is absorved by sea water.

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24 April 2018 - 541 individual commitments include the provision of financial resources, with total financing amounting to approximately US$25.5 billion.

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23 Apr 2018 - Harmful chemicals from sunscreen can leach into the ocean and damage coral. Here are some sun-blocking alternatives.

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20 Apr 2018 - Earth Day is celebrated on 22 April since 1970.  This international day reminds us about the interdependence between natural ecosystems and human life.

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18 Apr 2018 - Warming events prompt scientists to look at ecological, genetic, and engineering interventions.

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18 Apr 2018 - The second meeting of the Sustainable Ocean Initiative (SOI) Global Dialogue with Regional Seas Organizations (RSOs) and Regional Fisheries Bodies (RFBs) on Accelerating Prog

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17 Apr 2018 - As a result of rising ocean temperatures coral bleaching is becoming more common, and it's causing a biotic homogenization of local fish populations.

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16 Apr 2018 - Two billion people around the world lack access to effective waste collection so much of the plastic they use ends up in our oceans.

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13 Apr 2018 - Jordan could become a model for other marine destinations.

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12 Apr 2018 - Sea Shepherd, an international non-profit focusing on marine conservation, has launched a new campaign to increase awareness of the overwhelming plastic pollution of the ocean.

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11 Apr 2018 - Belize was criticized for putting its stunning coral reefs and other marine resources at risk. The country responded with innovative solutions.

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