Nudibranch Halgerda carlsoni, Papua New Guinea

adult adults alone april barrier reef barrier reefs benthons continent continental area coral reef coral reefs coralreef coralreefs count counting description descriptions ecosystem ecosystems enumeration enumerations gastropod gastropods individual individuals landmass landmasses littoral (shore) littorals (shore) localisation localization location lone lonely marine and coastal wetland area marine and coastal wetland areas marine and coastal wetland zone marine and coastal wetland zones melanesia mollusk mollusks month of year months of year natural area natural areas nature new guinea new guinea island new world nudibranch nudibranche nudibranches nudibranchs ocean oceania oceans one one animal only pacific ocean papua new guinea reef sea sea and coastal water sea bottom sea bottoms sea water seas single solo south pacific ocean stage of development time scale time scales tropical ocean tropical oceans tropical sea tropical seas wild animal wild animals wild fauna wild faunae world sea and ocean world seas and oceans