Perhaps two of the most interesting discoveries about octopuses, though, is that they have three hearts and nine brains. There may be many types of octopus, but they all have a truncated anatomy.

There are many remarkable things about octopuses—they’re famously intelligent, they have three hearts, their eyeballs work like prisms, they can change color at will, and they can “see ...

The octopus has three hearts, which help it survive in deep waters. Two pump blood to the gills, while the third circulates ...

According to the Monterey Bay Aquarium, octopuses poop from their siphon or funnel, a large, tube-like structure they also ...

Octopuses are fascinating in more ways than one. Beyond their impressive intelligence, they also have other unique features like three hearts, an amazing ability to camouflage, and a central brain ...

Octopuses have blue blood, three hearts and a doughnut-shaped brain. But these aren’t even the most unusual things about them! Known for their otherworldly look and remarkable intelligence, octopuses ...

At the same time, octopuses are as alien as any extraterrestrial you might dream up. For starters, they have three hearts and blue blood. When feeling under threat, they squirt a cloud of ink and ...