ANDY DAVIES / SCIENCE PHOTO LIBRARY ANDY DAVIES / SCIENCE PHOTO LIBRARY
Snakelocks anemone (Anemonia viridis) fluorescing. This sea anemone has been illuminated by blue light, which excites the green fluorescent protein (GFP) contained in the chlorophyll of its zooxanthellae. Zooxanthellae are symbiotic algae found in the anemone's tissues. The protein absorbs the blue light and emits it as lower-energy green light. The zooxanthellae have a symbiotic relationship with the anemone, producing food through photosynthesis. The anemone also feeds on plankton, small fish, molluscs and crustaceans, which it catches with its long stinging tentacles. It is found in the eastern Atlantic Ocean. This specimen was collected from a rockpool on the Pembrokeshire coast, Wales, UK.
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