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Symptoms and Signs of Blue-Ringed Octopus Bite Symptoms and First Aid

Doctor's Notes on Blue-Ringed Octopus Bite Symptoms and First Aid

The blue-ringed octopus is found in the Indo-Pacific Ocean area (Australia, New Zealand, New Guinea and Japan). It is less than 8 inches in diameter with its tentacles extended. Its name comes from the fact that it has blue rings and luminous come from picking up and handling the octopus or stepping on it in a sandy beach area. The sting of the blue ringed octopus releases a highly poisonous toxin.

Associated symptoms of a blue-ringed octopus bite (sting) include excessive bleeding, numbness, nausea, vomiting, vision changes, and difficulty swallowing. For the first 5-10 minutes the pain is mild, but then begins to increase. Difficulty breathing and paralysis occur after about 10 minutes. A blue-ringed octopus bite is considered a medical emergency. .

Medical Author:
Medically Reviewed on 3/11/2019


Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.