See how the blue-ringed octopus warns predators away—and paralyzes prey. | National Geographic

Blue-ringed octopuses have a beak-like mouth with a radula for feeding. They inject their venom through a sharp, parrot-like beak located in the center of their tentacles. #octopus #ocean #travel | Critter Hunter

14K views · 654 reactions | Have you ever seen a blue-ringed octopus while diving?  Despite their innocent appearance, they are among the most venomous marine species on the planet.   IG user 'kenzokiren' Lembeh, Indonesia | PADI | Facebook