Action

1st prize

 

Shrimp cleaning the teeth of a lizard fish

Jim Greenfield

 

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.

Photographed at a depth of 10 metres off Curacao, Netherlands Antilles, in 2003.
Nikon F90x, 105mm macro lens, two flashguns