north pacific giant octopus on sandy floor

underwater reef animal coral invertebrate aquarium organism wildlife fish sea art food seafood north pacific giant octopus swims sandy floor big understatement observing ocean dwelling creature cephalpods huge bulbous head focal point cephalopod's retains organism's reddish brown coloring eight legs spread area tentacles suction cups sprawl spiky smooth creature area camouflage surroundings ease environment intelligent smart flexible solitary alone teacher predatory rocky kelp greenery texture shape swift quick swimmer deep blue red impressive science biology