endemic freshwater clam in ohrid lake, underwater photography - dreissena sp.

dreissena polymorpha river small ecosystem diving scuba sand mollusca lake pond deep dreissenidae diversity rocks hard bivalves beige filter superior species discovery healthy fresh water color scenery conservation environment wilderness ecology wildlife clam shell mollusk animal closeup freshwater wild aquatic mussel shellfish nature marine life cold seashell colorful detail underwater background brown natural european europe zebra invertebrates stankovici oldest ohridsko ohrid macedonian macedonia aquaworld aquatica aqua living organism populated endemic genus mussels shells planktonic larval class bivalvia