Nautilus, Nautilus pompilius, Great Barrier Reef, Australia

aquatic argonauta australia cephalopoda coral sea coralsea great barrier reef lophotrochozoen macro marine fauna marine invertebrates marine wildlife mollusc mollusca nature nautilida nautilidae nautiliden nautilina nautiloidea nautiloiden nautilus nautilus pompilius ocean oceania pearl portrait queensland sea sealife shell shells underwater underwaterphoto close up close up closeup evolution living fossils olfaction pinhole underwaterphotography underwaterpicture underwaterworld