Fish Light Up in Neon Colors

Coral reefs are full of flamboyantly colored creatures. But a new study finds that even the more subtly hued camouflaged species hiding in nooks and crannies have their gaudy side. You just have to know how to look at them.

Some 180 species of fish and sharks have unique structures in their skin that enable them to glow neon red, green, and orange under blue light—a process known as biofluorescence.

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