Coconut octopus catching shell at night on sandy reef bed

coconut octopus amphioctopus marginatus veined octopus cephalopod amphioctopus cephalopoda octopus mollusca mollusc octopoda night night dive noctural prey kill catch shell marine creature marine species marineanimal marine life scuba dive scuba diving critters muck diving ocean sea underwater tropical diving tropicalocean asia philippines western pacific ocean tropical waters indopacific feeding feed