ABC Environment 8 Oct 2014
Scientists warn that the acidity of the oceans has risen by more than a quarter over the last 200 years, posing danger for shellfish.
OCEAN ACIDIFICATION has risen by a quarter since pre-industrial times as a result of rising carbon emissions, casting a shadow over the seas as a future source of food, scientists warned on Wednesday.
In the past two centuries, the sea's acidity level has risen 26 per cent, mirroring the proportion of carbon dioxide it absorbs from the air, they said in a report to the UN Convention on Biological Diversity meeting in South Korea.
Rising acidity will have damaging consequences for shellfish, corals and other calcium-making organisms which play a vital part in the food web, they said.