The blue-ringed octopus is the only octopus to have a lethal toxin that can kill humans. Read here to learn about potential ...

Blue-ringed octopus found at Callan Park in Sydney Animal is one of world's most deadly sea creatures READ MORE: Dad paralysed after octopus bite at Balmoral Beach A deadly blue-ringed has been ...

Forbes contributors publish independent expert analyses and insights. I write about biodiversity and the hidden quirks of the natural world. Go diving into the intertidal waters of the Great Barrier ...