kyokan:

Coral fluorescence by Carlos Villoch

It is not yet fully understood why, some corals, such as those in the Red Sea, are fluorescent when viewed under blue light.

Corals possessing this feature appear to be thriving by comparison to those that do not.  It is possible that this adaptation it is used as a mechanism to filter some of the harmful rays from the sun, which gives the fluorescent corals a greater chance of survival, particularly in warmer waters.

(via “Coral fluorescence” by Carlos Villoch | Redbubble)

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