A longarm octopus flashes its colors at night, Anilao, Philippines.

anilao animal animal body animal themes aquatic biology black background blackwater diving cephalopod color image copy space fragility full length horizontal invertebrate juvenile larva lilliput longarm octopus longarm octopus macro macrotritopus defilippi marine biology mollusk muck diving new life newborn night no people octopodidae octopus one animal outdoors philippines photography plankton science sea life side view small southeast asia symbiotic relationship tiny undersea underwater wildlife zoology