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Mysteries of the deep: how some sharks glow green in the dark

This image taken in 2015 by David Gruber, a professor at City University of New York, shows a glowing chain catshark at Scripps Canyon off the coast of San Diego California. [AFP]

It may not sound like the best way to go incognito, but some species of shark that lurk on the ocean floor glow a bright green hue visible to others of their kind.

Scientists said Thursday they had identified the molecules responsible for the marine predators' biofluorescence, and that it might perform other functions too like fighting microbial infection.

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