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Blue Ringed Octopus

This small octopus is found in shallow coastal waters around Australia. They are not aggressive and bites usually occur when humans “play” with this animal. Envenoming causes rapid paralysis. Timely support of airway and ventilation ensures a good outcome.

Tetrodotoxin (maculotoxin in Hapalochlaena maculosa) is a potent sodium channel-blocking neurotoxin. Venom is introduced from the beak under the body of the octopus, not from the tentacles

References

  • Sutherland SK, Lane WR. Toxins and mode of envenomation of the common ringed or blue-banded octopus. Medical Journal of Australia 1969; 1:893-898.
  • Sutherland SK, Tibballs J. Australian animal toxins: the creatures, their toxins and care of the poisoned patient. South Melbourne: Oxford University Press, 2001.

Toxicology Handbook

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About Mike Cadogan

Emergency physician with a passion for medical informatics and medical education. Co-founder of HealthEngine, iMeducate, and the GMEP. He writes more eclectically on the web as @sandnsurf | + Mike Cadogan | Contact