Beneath Australia’s calm coastal shallows, the blue-ringed octopus reveals nature’s balance between stunning color and silent danger.

This rarely seen glass octopus bared all recently — even a view of its innards — when an underwater robot filmed it ...

Octopuses, squids, cuttlefish and other animals in the cephalopod family are well known for their ability to camouflage, changing the color of their skin to blend in with the environment. This ...