LOUISE MURRAY / SCIENCE PHOTO LIBRARY LOUISE MURRAY / SCIENCE PHOTO LIBRARY
Favites sp. coral fluorescing under blue light. This coralis also known as moon coral or pineapple coral. Some species of coral emit a fluorescent glow. It is thought the glow may attract symbiotic algae, or protect the coral from the intense ultraviolet light of the sun in shallow water. Photographed in Thailand.
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