Underwater fluorescence. Stone coral (Stylophora species, yellow), sponges (orange) and algae (red) photographed at night using blue coloured flashlight and a yellow filter. Blue light excites pigments within some underwater organisms causing them to emit a fluorescent glow. It is thought the coral's glow in attracts symbiotic algae which in turn allows the coral to grow in deeper water. Fluorescence may also offer protection against harmful ultraviolet light from the sun in shallower water. Photographed in the Red Sea, Egypt. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / EYE OF SCIENCE |
Taille de l’image : | 3890 px × 2720 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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