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

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

2K views · 93 reactions | Here's an amazing up close look at the famed blue-ringed octopus! Is this on your to-see list? : @julia.waterchild (IG) | SSI | Facebook

Although only 8-10 inches long, the blue-ringed octopus is one of the most venomous animals on the planet. Their bright blue rings act as a warning to potential predators. Learn more in our encyclopedia: https://bit.ly/2RMovRF | Oceana

The glow of a blue-ringed octopus comes from their iridophores, light-reflecting structures arranged to shimmer blue when the muscles above them relax. 🌟 📺: Australian Geographic Extraordinary Animals now streaming for free via SBS On Demand #ausgeo #blueringedoctopus #octopus #deadlyanimals #marine #underwater | Australian Geographic