Tiny sacs contain the pigments inside the iridophores of a live chameleon, but when the chameleon's mood changes, its nervous ...

In the case of green animals, however, the red pigment must be acquired in order to change color, which requires more time and energy from the organism. In the case of chameleon shrimp ...

Small shrimps of the genus Hippolyte have the ability to change color to camouflage themselves in the algae where they live and escape predators. Depending on the algae they are in, they can turn red, ...