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Pink and purple pigments act as sunscreen for corals

7 February 2013, by Tom Marshall. http://planetearth.nerc.ac.uk The chemicals that give some corals their luminous pink and red colours also protect them from damage caused by too much sunlight, scientists have shown. The idea isn't altogether new, but this is the first conclusive evidence for it. Corals need light to survive, but too much can […]