#5 Animals That Change Color: Seahorse — Wearing Their Hearts on Their Skin There are 43 recognized species of seahorse , but they all have in common the ability to change their color on a whim.

Colors are widely used in communication within and among animal species. For example, peacocks proudly display their vibrant tails, adorned with iridescent eyespots, to attract peahens for courtship.

Conspicuous colors tend to be signals, often helping animals woo mates or warn predators. Yet the origins of these attention-grabbing colors are not clear. Did plants start making jazzy fruits and ...