Seals are aquatic animals. Most seal species live in the sea. A small number of seals live in fresh water. However, in general, they have to live in the water and are aquatic animals. But they can't stay in the water all the time, they need to breathe with their lungs, and then they need to get out of the water to breathe. This is not to say that they can stay out of the water for long. They do need to breathe out of the water, but most of the time they live in the water and can't leave the water for a long time.
As mentioned above, seals belong to aquatic animals and need to live in water. In ancient times, seals lived on land, but later because of changes in their living environment, they lived in the water. During their long life in the water, seals have evolved to adapt to aquatic life and spend most of their time in the water.
Seals breathe with their lungs, so they can stay on land for a while. However, as mentioned above, although they will leave the water for a short time because of their water breathing, they can not leave the water for a long time. Therefore, seals can not live on land all the time. If the seal has been on land, the seal's skin may be dry and cracked, at which time the seal can only return to the water to replenish water. In addition, in the body structure of seals, they have evolved limbs like fins, allowing them to move more freely in the water. This is not the case on land, where their flippers can also move on the ground, but very slowly.
