The Southern blue-ringed octopus (Hapalochlaena maculosa) is found up to 50 metres deep along Australia's southern coastline, including around Tasmania. It reaches about 22 centimetres long and its ...

The animal is one of four species of the extremely venomous blue-ringed octopus and is known as a blue-lined octopus due to its non-circular markings. Blue-lined octopuses (Hapalochlaena fasciata ...