Why Do Corals Glow in the Dark?
A new study suggests they use fluorescence for photosynthesis.
by Sarah Zhang
Jul 10, 2017
2 minutes
It’s one of the ocean’s most beautiful and striking mysteries: Why do corals fluoresce?
In shallow waters, they glow a brilliant pink and purple. In deeper waters, corals turn red and green against a dim blue background. The view is most unforgettable at night with a flashlight and mask filter, when the fluorescent corals provide a “psychedelic adventure.”
You’re reading a preview, subscribe to read more.
Start your free 30 days