"Meet the blue-ringed octopus, one of the most venomous marine species on the planet!

Although this creature’s bite contains the powerful neurotoxin tetrodotoxin, the animal is docile and unlikely to bite unless handled 🐙

In this case, the octopus is using it’s flashing of the blue rings as a protective mechanism to warn predators. I couldn’t help but be fascinated by the colours it was displaying and it’s movements across the reef! Rather than scare me away, it drew me in closer… "🔎 Kenzo Kiren

National Geographic