The seal is a kind of marine animal, and it looks dull and cute from the appearance. Seals have fur on their bodies, which is obvious if you can see them at close range. The seals we can see are usually in the aquarium, so we can take a closer look at the seals here. The fur of seals covers their whole body and is relatively dense; Each hair is thinner and shorter. The fur of seals plays an important role, so the dense fur is used to keep warm. Seals are also found in the polar regions, where the climate is very cold, and one of the measures of protection against the cold is their thick fur. In addition, there are thick layers of fat and so on.
As mentioned above, seals are hairy, and their hair is thick and dense. The color of a seal's fur changes as it ages. Generally speaking, the fur of seals is darker when they are young, especially when they are born; They get shallower as they get older. When they reach adulthood, the back of the seal is usually blue-gray or gray-brown; The color of the abdomen itself is relatively light, generally milky yellow.
However, there are many species of seals, so there are some species that are exceptions and do not conform to the above rules. For example, there is a seal that lives mainly in the Arctic region, which is different, called "harp seal". When they are born, the color is white. After about half a month, their color will become silvery gray, and there are some irregular black spots on their bodies.
