Greater Blue-ringed Octopus (Hapalochlaena lunulata)


The Blue Ringed octopus has 3 hearts pumping blue blood, food digestion occurs in the brain and it contains enough venom to kill 26 humans in minutes!

Peacefully resting on coral

But maybe the craziest fact of all is that this clever little badass doesn’t even produce its own venom. Like many other sea creatures, the blue ring utilises a symbiotic relationship with other organisms.

In the Blue Ring’s salivary glands live many toxin secreting bacteria, these neurotoxins paralyse any animal unlucky enough to be injected.

When hunting, the Blue Ring descends on its prey using its beak to create a puncture wound which it then spits saliva into; quickly paralysing the victim and making for a fuss free meal.

Despite this, the Blue Ringed octopus has only caused 3 recorded deaths worldwide. These beautiful creatures are very shy and are fascinating to observe. Like all marine creatures, show them respect and you’ll be rewarded with a breathtaking experience, and often a flamboyant display.