The center of this branching coral appears colorful and healthy, yet the outer tips are bleached white. Coral polyps on the outer branches have expelled their symbiotic algae, losing a source of food as well as their color.
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Image credit: Unmodified photo by Behan, CC BY-NC-ND 2.0, https://creativecommons.org/licenses/by-nc-nd/2.0/, via Flickr.
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Last modified:
8 December 2016 - 10:31am