A video of an octopus changing colors while it sleeps is raising a lot of questions about the mysterious sea creatures. The footage aired in the new PBS documentary titled "Octopus: Making Contact." ...

Octopuses change color to camouflage themselves from predators such as stingrays and eels. Octopuses have even been observed changing color in their sleep. Octopus's color-changing ability is known as ...

The octopus is a fantastic animal. It is identifiable because of its round body and eight arms (tentacles). Although they can survive in all oceans, they prefer warmer, tropical regions. These ...