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 ...

A freediver in Cyprus was surprised to play a game of hide-and-seek with an octopus on Sunday. The diver, Matthew Hyatt, who has posted daily video updates to his social media about his attempts to ...

It's one of the most bizarre creatures on Earth, and not just because it looks so different. The octopus can camouflage itself in a flash; squeeze its entire body through a one-inch hole; and their ...