Steinitz' shrimp goby (Amblyeleotris steinitzi) with parasitic nudibranch (Gymnodoris nigricolor) feeding on its dorsal fin, the goby lives in symbiosis with a shrimp who digs a burrow which the goby lives in and watches out for predators. New Ireland, Papua New Guinea . NOT AVAILABLE FOR MAGAZINE USE IN GERMAN-SPEAKING COUNTRIES UNTIL 1ST JULY 2013.