The seal is a kind of aquatic mammal, belongs to the pinniped animal, they generally live in the sea. Among the pinnipeds, seals are only one of them, and two of the more common ones are sea lions and walruses, which belong to different families, but they all belong to pinnipeds in general. There are many differences in the ears of these animals.
Among them, the seal's outer ear shell has completely deteriorated, or the ear shell has deteriorated, or the outer ear has deteriorated, leaving only two ear holes. When they swim in the water, they can control their opening and closing freely. The sea lion also has ear shells, but the ear shells are relatively small. Ear degeneration and only ear holes are one of the important characteristics of seals'appearance, which can distinguish them from similar animals, such as sea lions mentioned above.
As mentioned above, seals do not have external ears, their auricles have deteriorated, and they only have ear holes. Although there are only ear holes, it can also be said that they have ears, ear holes can also play the role of ears. Seals have two ear holes, one on each side of their head, behind their eyes. If you can see some real seals at close range, you can easily see their ear holes, because their ear holes are relatively large. In addition, if the angle is correct, we can also clearly observe the ear hole of the seal from the picture.
