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

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