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 ...

A photographer came across a rare octopus while walking on a Welsh beach. It was orange in color, and at the time of discovery was buried in sand. Gareth Davies, the photographer, found the stunning ...