Photo of the Day: Beautiful But Deadly
What makes it dangerous?
The blue-ringed octopus can kill a human with a single bite. The tiny cephalopod’s saliva contains a powerful toxin that causes muscle paralysis, including the muscles that control breathing.
Blue-ringed octopuses are not aggressive and will only bite humans if provoked or handled. When agitated, the octopus displays vivid, blue rings that pulsate as a warning to back off.
They can be found in shallow, sandy areas off the coast of Australia and in the western Pacific Ocean.
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