Figure 2.

Coral mortality caused by seaweeds in experimental coral–algal pairs exposed to high CO₂ levels. (a) Competing corals and seaweeds of the species Acropora intermedia and Lobophora papenfussii at the beginning of the experiment. (b) and (c) Coral branches with advanced tissue mortality caused by the seaweed. Coral tissue disintegration occurred rapidly in the high CO₂ treatment. Coral white areas show bare coral skeleton devoid of coral tissue.