Image from en.wikipedia.org, licensed with GFDL. Original description follows:

Goby fish (Amblyeleotris sp.) and shrimp (Alpheus sp.) in front of their burrow. The fish and the shrimp live together in a Symbiotic relationship where the shrimp digs and cleans up a burrow and the fish warn the almost blind shrimp against predators.

The picture has a blueish tint over it, because it was taken without a flash at 15 meters below sea level. At these depths this is what the world actually looks like; one needs a flash or torchlight to see the colors that are filtered out by the water.

Picture taken by Jan Derk in April 2004 in Koh Tao, Thailand.

S'ha alliberat aquesta obra al domini públic pel seu autor janderk. Això s'aplica a tot el món. En alguns països això pot no ser legalment possible, en tal cas: janderk concedeix a tothom el dret d'usar aquesta obra per a qualsevol propòsit, sense cap condició llevat d'aquelles requerides per la llei.