What are the advantages of scales?

Scales

1. A scale is a tiny plate or shield that is a feature of some creatures' outer layers of skin.
2. Scales offer defence against the elements and predators.
3. Bone from the deeper skin layer, or dermal layer, is used to make fish scales.

Advantages of scales:

1. One of the biggest advantages of scales on a fish is protection.
2. It provides protection from predators, parasites and even the environment.
3. A reptile's thick, thorny scales can help defend it from predators.
4. Scales can make it harder for predators to bite or attack their prey, and they can even hurt them.
5. Moreover, most scales also provide effective camouflage.