THE common Otter sometimes takes to the sea; but, on the eastern coasts of Northern Asia and the opposite shores of North America, true Sea Otters are met with, chiefly about the numerous rocky islands which fringe those coasts. The Sea Otter in its habits resembles the seals more than the common species; it is about three feet long without the tail, and is covered with a thick, rich, dark brown, or nearly black fur, which is so highly prized that single fine skins have been known to sell for a sum equivalent to twenty pounds, and the animals have, in consequence, been pursued with such avidity, that their numbers are greatly reduced. [Illustration: THE COMMON SEAL. (_Phoca vitulina._)] THE amphibious flesh-eating animals, though nearly allied to the otter in their habits, are very different in the construction of their bodies. Their feet are so short and so enveloped in skin, that they are of scarcely any use in assisting the animal on dry land; so that the Seal’s progress on solid ground is only effected by a sort of half tumbling, jumping, and shuffling motion, excessively ridiculous to a looker-on. The feet, however, which are furnished with strong claws, are of use in enabling the animal to climb out of the water over a rocky shore. For swimming, the Seal is admirably adapted; its long flexible body is shaped like that of a fish, tapering to the tail; and it is furnished with strong webs between the toes, so as to make the fore feet act as oars, and the hind feet, which the animal generally drags behind it like a tail, to serve as a rudder. The Common Seal lives generally in the water, and feeds entirely on fish; only coming to shore occasionally to bask on the sands, and to lie there to suckle its young. The usual length of a Seal is four or five feet. The head is large and round; the neck small and short; and on each side of the mouth there are several strong bristles. From the shoulders the body tapers to the tail, which is very short. The eyes are large: there are no external ears; and the tongue is cleft or forked at the end. The body is covered with short thick-set hair, which in the common species is generally grey, but sometimes brown or blackish. There are, however, several species; and one of them, which is called the sea-leopard, has the fur spotted with white or yellow.