Figure 1 (IMAGE) Science China Press Caption The zooxanthellae density average values are expressed as the mean±SD in the samples from coral reefs in Sanya, the Xisha Islands and the Nansha Islands. a-c indicate posthoc multiple comparisons of ZD among sampling sites. Credit @Science China Press Usage Restrictions Use with credits License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.