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 ...

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 ...

An Octopus cyanea hunts with a blacktip grouper on one side and a blue goatfish on the other. Octopuses don’t always hunt alone — but their partners aren’t who you’d expect. A new study shows that ...

Mythology and superstition have portrayed octopuses as alien beings or evil creatures dwelling in the terrifying dark depths of oceans. Little wonder, considering they are a bit unusual. The giant ...

Among the smartest animals on Earth, octopuses are unique for being utterly weird in their evolutionary path to developing those smarts. Philosopher Peter Godfrey-Smith has called the octopus the ...

Robyn White is a Newsweek Nature Reporter based in London, UK. Her focus is reporting on wildlife, science and the environment. Robyn joined Newsweek in 2022 having previously worked at environmental ...

According to most science fiction and fantasy depictions, alien life is similar to what we know on Earth. But it’s likely that aliens, if they exist, are actually very different from us. Scientists ...

When an octopus coils one of its flexible arms around a rock or a bit of food, it's not because the animal's brain said, "Pick that up." Rather, the arm decides for itself what it's going to do next.