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 ...

Octopuses are perhaps the most unusual creatures to have ever inhabited the ocean. Their soft body, eight arms, and high ...

Octopuses break so many biological expectations that scientists still struggle to explain how they ended up this way through normal evolution. From how their brains work to how their bodies heal, ...

Intriguing and incredibly unique, octopuses are cephalopods with three hearts that pump blue blood throughout their eight arms. These intelligent sea creatures have multiple brains — nine, to be exact ...

Meet the world's largest octopus, which can tip the scales at over 600 pounds. Hear about the amazing feats of these highly ...

Octopuses have often been thought to prowl the seafloor solo using camouflage. But a new study suggests that some have surprisingly rich social lives. A new study found that some members of an octopus ...

Oregon State University’s Hatfield Marine Science Center says it has to rely on local fishermen to find a giant Pacific octopus. A Giant Pacific Octopus playing with toys in the tank at Hatfield ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. “This project was ...

Equally mysterious and beautiful, octopuses are captivating creatures. There are over 300 octopus species, and they thrive in every ocean habitat. Their soft bodies can rapidly change shape, allowing ...