Where Does That Fluorescent Glow Come From?

[ChrisP]

Just wondering. So many tank photos show corals having an almost fluorescent glow. What lighting factor or factors account for this look?

 

[oreo54]

Just wondering. So many tank photos show corals having an almost fluorescent glow. What lighting factor or factors account for this look?

Coral Coloration: Fluorescence: Part 1

While coral coloration is today less likely to be the subject of intense interest (and debate) within the hobby than it was just 5 years ago, the situation is much different in peer-reviewed literature, with researchers producing a staggering amount of information on marine invertebrate...

reefs.com

Just need "eye dull" blue light and the corresponding pigment present.

 

[Nano sapiens]

This nifty little chart shows you the light wavelengths ('colors' or 'hues') from the light source that excite coral fluorescent pigments and the light wavelengths that are then emitted from the coral: