posted on January 23, 2013 09:41
New research has found a mechanism as to how corals use their pink and purple hues as sunscreen to protect them against harmful sunlight. Many reef corals need light to survive, as they benefit from sugars and lipids that are produced by their light-dependent symbiotic algae. However, in the shallow water of coral reefs, light levels are often higher than required by the corals, so paradoxically, the vital sunlight can become harmful for the algae and their hosts.
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