Blue-ringed octopuses are undeniably stunning. When they are alarmed, these animals will show off the eponymous iridescent blue rings that cover their body and arms. But their adorably small size and ...

But their adorably small size and Instagrammable appearance is deceptive ... There may be around 10 different species of blue-ringed octopus, though only four have been given scientific names. The ...

This is the moment a large octopus was seen slyly retreating into its den to evade potential predators. Mesmerising video ...