Coral and algae fluorescing underwater. Stone coral (centre, red and green) and algae (background, red) photographed at night using blue coloured flas

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Coral and algae fluorescing underwater. Stone coral (centre, red and green) and algae (background, red) photographed at night using blue coloured flashlight and an orange filter. Blue light excites pigments within some underwater organisms causing them to emit a fluorescent glow. In coral, it is thought the glow attracts symbiotic algae which allows the coral to grow in deeper water. Fluorescence may also offer protection against harmful ultraviolet light from the sun in shallower water and camouflage. Photographed in the Red Sea, Egypt.

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Size: 4292px × 2856px
Photo credit: © EYE OF SCIENCE/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: algae, animal, biofluorescence, biofluorescent, biological, biology, bioluminescence, bioluminescent, coral, egypt, fauna, fluoresce, fluorescence, fluorescent, fluorescing, glow, marine, nature, polyp, red, sea, stone, underwater, water, wildlife, zoological, zoology