freshwater snail in ohrid lake, underwater image - radix auricularia

algae animal aqua aquaria aquatic aquatica aquaworld auricularia balthica beautiful bigear biology blue bottom close closeup cold color colorful crawling creature diving ear ecology endangered environment europe family fauna freshwater gastropod gastropoda head horizontal hygrophila invertebrate isolated lake life little liverwort living lymnaeidae macro mediumsized mollusc mollusk nature ohrid one organism outdoors perspective polymorpha pond pool pulmonate radix rare river rope scene scuba shallow shell shore skin snail species standing switzerland undersea underwater vertical water wildlife