Blending in with your surroundings is a crucial (and fascinating) skill in the animal kingdom, which is why many animals can change colors on demand. Chameleons, seahorses, and octopuses can all do it ...

A female blanket octopus has to be up there as one of the most spectacular sea creatures to see alive in the wild. Growing to the length of an adult human, they trail an iridescent rainbow skirt as ...