Fossils can tell scientists what extinct animals looked like and what their environment was like. But what about their diet?

Readers explain that this colouration pattern in many living things is all about camouflage, while its opposite tends to ...

brocksi had a slender body, similar to modern-day smelts. The fish also presented evidence of countershading, in which the animal was darker on the top and lighter on its stomach, with two stripes ...

This demonstrates just how effective the countershading on a white shark can be. In this clip, the shark was right under his ...

Cephalopods are set apart from other mollusks by their advanced behavioral abilities and the complexity of their nervous systems. Because of the great evolutionary distance that separates vertebrates ...