Most fish have scales. Sharks belong to one of the same class. They also have scales. However, different fish have different scales. There are three main types of fish scales, namely, bone scales, shield scales and hard scales. The scales of bony fish are bony scales, those of cartilaginous fish are shield scales, and those of some ganoid fish are ganoid scales. Sharks are a kind of cartilaginous fish, and their scales are shield scales.
The difference between different fish scales is still relatively large, we usually the most common is the bone scale, they are imbricated. The development and structure of the scutum scale are quite different from those of the bone scale. The structure of the shield scale is divided into enamel, tooth cavity and pulp cavity, which is similar to the structure of teeth. Therefore, the shark's skin is lethal, if you accidentally touch it, you will be injured.
As mentioned above, sharks, as a kind of fish, also have scales. The role of shark scales is also very important, mainly the following:
1. Protective role: The most important role of shark scales is the protective role, which is also the general role of all fish scales. Scales can provide a natural barrier, so that the shark's body can be isolated from the surrounding microorganisms, so that sharks can effectively avoid infection and disease.
2. Reduce friction with the water: The scales can also reduce the friction between the shark and the water, which can make them swim faster.
3. Camouflage: Shark scales also have a certain camouflage effect, because fish scales generally have a certain reflective effect, which can play a camouflage role in the water.
