From the smallest to the biggest, there are species in the animal kingdom that can change their skin coloring not only for camouflage but for other important reasons.
Many animal species have the ability to protect themselves from predators as well as help them catch their prey by deception called camouflage. A chosen few even have the remarkable capability to change color to help them attract mates, to communicate with other members, or simply to express their mood.
These snails without shells are some of the most colorful and intricately patterned and shaped creatures on the planet. Their predators better not be fooled by their fascinating “look at me” appearance as they can taste awful or is poisonous. The nudibranchs colorings, which help in camouflage, depend on the food they eat. (Read more about them here)
They are bony fish without the scales. While their relatives swim horizontally, seahorses swim upright, and very poorly, with the help of their dorsal and pectoral fins. They are called “the chameleons of the sea” as they can change color as a response to many different environmental factors including: stress (they may darken), social interactions (their colors often brighten during courtship), temperature, disease, diet and also to blend with their immediate surroundings.
Flounders hide in the sand by changing color to match their surroundings. Upon hatching, a young flounder swims upright just like any normal fish. It also has two eyes located on each side of its head. As it becomes an adult, one eye migrates to the other side facing upwards as a process of metamorphosis.