blue-ringed octopus

English

greater blue-ringed octopus (Hapalochlaena lunulata) photographed by Elias Levy

Etymology

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

Noun

blue-ringed octopus (plural blue-ringed octopuses or blue-ringed octopodes or blue-ringed octopi)

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

References

• blue-ringed octopus on Wikipedia.Wikipedia