Coconut octopus disappears from seabed by digging in into dark sand

coconut octopus hide dig in sand day walk clam shell coconut octopus veined hunt clever shelter funny bizarre muck amphioctopus marginatus pacific indonesia philippines underwater wildlife nature cephalopod marine life ocean reef tentacles wild natural scuba tropical water ecosystem biodiversity tentacle environment camouflage invertebrate creature octopodidae sucker deep octopoda cephalopoda