The bite of a blue-ringed octopus is rare, but extremely dangerous. Avoid disturbing creatures in your habitat to reduce the risk of being bitten. A blue-ringed octopus is one of the most dangerous animals in the ocean. Its bite can be fatal to humans.
However, very few people have died from the bite of a blue-ringed octopus. These octopuses are not aggressive and tend to stand alone unless attacked. If you or someone you know has been bitten by a blue-ringed octopus, call 911 or activate the local emergency medical service in the area immediately. There are not many reports that octopus injure humans; they tend to avoid humans and many attacks have not been verified.
Blue-ringed octopus bites are considered a medical emergency, so don't wait for symptoms to occur; quickly get the bitten person out of the water and, if possible, call 911 and consider moving to the nearest hospital. Some people who have been bitten said they were aware and aware of what was happening, but that they couldn't move.