abdopus akashiyaki amphitretus ancient greek anesthesia animal animal testing aquarium argonautidae argonautoida autonomic nervous system autotomy beak big blue octopus biological classification blood blood plasma blue-ringed octopus bolitaenidae bone brain british national corpus bronze age camouflage cephalopod cephalopod arm cephalopod intelligence cephalopod size cerebral cortex chromatophore cirrina cirroteuthidae coleoidea color vision commercial fishing common octopus congenital disorder copepod copper coral reef crab creation myth crete cruelty to animals cuttlefish decapodiformes deep sea eel fishing industry genus gill glass octopus grammatical gender greater blue-ringed octopus greece greek language hectocotylus hemocyanin hemoglobin human skin color incertae sedis incirrina ink sac intelligence invertebrate iron japanese cuisine knossos larco museum latin legend of the octopus life expectancy lionfish lizard long-term memory marine biology mental image mimic octopus minoan civilization moche modern greek mollusca moray eel muscular hydrostat nautilus nervous system neuron normal conditions north pacific giant octopus noun observational learning ocean octopodidae octopodiformes octopus wrestling olfaction oxford english dictionary oxygen parrot peru phosphorus plankton polarization polespear portable document format potassium problem solving proprioception pupil red blood cell reflex sannakji seattle aquarium selenium seven-arm octopus shark shellfish short-term memory skeleton skink somatosensory system south korea species spermatophore squid statocyst stauroteuthis stereognosis suction cup sushi takoyaki taste telescope octopus tennis ball tentacle tide pool tsukiji fish market tuberculate pelagic octopus university of lethbridge vampyromorphida veined octopus wikimedia commons wikispecies william elford leach