And the oceans are becoming more acidic, with probable negative consequences to many coral reef and calcium-bearing organisms.

此外，海洋酸性越来越高，有可能给许多珊瑚礁和含钙有机体带来消极后果。

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Stony corals are microscopic animals with an outer skeleton of calcium carbonate that form colonies and are responsible for reef-building.

UNESCO: L O S S A R Y