A shocked swimmer has found one of the ocean’s most deadly creatures at a popular Sydney beach. Footage posted online shows a blue-ringed octopus in a small fishing net after reportedly being found at ...

Octopuses have gotten a reputation for being cunning camouflagers and intelligent creatures. But some are known for a more ominous reason: They're deadly. One group — the blue-ringed octopus (genus ...

The new species, named Microeledone galapagensis, has a blue hue, which is believed to be the rarest color in nature.

Being bitten by a strange animal can be extremely scary, especially since so many species use venom against their prey. One such animal is the blue-ringed octopus. While octopus venom is not typically ...

A newly discovered tiny blue octopus from the Galápagos is a striking reminder that the deep ocean still holds countless secrets.

Among the ocean's most dangerous creatures, size isn't everything; in fact, some of the smallest marine animals are among the most dangerous. For example, the blue-ringed octopus has an extremely ...