The Best Science Photographs of 2005
This tiny shrimp fearlessly enters the mouth of a fish to clean its teeth. Fish value this service as the shrimp removes and eats harmful parasites. The shrimp lives in the sea anemone in the background. Fish recognize the anemone as a cleaning station, and when they need a clean they approach it and open their mouths, encouraging the shrimp in. This is mutualism - a form of
symbiosis in which both partners benefit.
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