blue-ringed octopus

== English == === Etymology === From blue +‎ ringed +‎ octopus. From being an octopus with very prominent bright blue rings all over its body. === Noun === blue-ringed octopus (plural blue-ringed octopuses or (nonstandard) blue-ringed octopusses or (nonstandard) blue-ringed octopi or (nonstandard) blue-ringed octopii or (rare) blue-ringed octopodes or (rare, nonstandard) blue-ringed octopus) Any octopus of the genus Hapalochlaena, with distinctive blue rings, that carry the highly poisonous venom tetrodotoxin (TTX). ==== Translations ==== === References === blue-ringed octopus on Wikipedia.Wikipedia