Blue is one of the rarest colors in the animal kingdom, and unlike other pigments found in nature, most blue creatures don’t actually produce blue pigment. Instead, their color comes from structural ...

From household pets to deep-sea predators, these animals experience life in a unique way. Let’s explore 10 fascinating ...

The answer is that water really is blue, but only very faintly. You need a huge amount of it in one place to see the colour at all. As light travels into water, all the red and green light (all ...