The octopus is one of the coolest animals in the sea. For starters, they are invertebrates. That means they don’t have backbones like humans, lions, turtles and birds. That may sound unusual, but ...

Watch this hungry octopus change color as it dreams about eating a crab and find out how they alter their skin so quickly!

They change shape and color, and squirt ink. But they also will return your gaze, "as if they're scrutinizing you." ...

Learn what this seven-armed cephalopod loves to eat and how it catches its prey. Lurking in the ocean’s twilight zone — an area between 650 and 3,000 feet below the surface where light rarely reaches ...

How does an octopus use its arms? That’s the question a team of researchers set out to investigate. In the process, they discovered something intriguing — octopuses use receptors in their arms to pick ...