blue-ringed octopus

Etymology
. From being an octopus with very prominent bright blue rings all over its body.

Noun

 * 1) Any octopus of the genus, with distinctive blue rings, that carry the highly poisonous venom tetrodotoxin (TTX).

Translations

 * French:
 * German: Blaugeringelter Krake
 * Irish: ochtapas gormfháinneach
 * Italian: polpo dagli anelli blu
 * Korean: 파란고리문어
 * Portuguese: polvo-de-anéis-azuis