Arctocephalus australis

South American fur sea lions have external ear shells. The skull base is 255mm long, the forehead is flat, the snout is medium-long, the nose is 38mm long, the palate is wide, the teeth are parallel, the crowns are tricuspid or unicuspid, and the tooth formula is 2156/315=34~36.
The fur of South American fur sea lions is dark gray. Adult male lions are this color all over, with occasional gray or brown markings. Female lions and cubs may have light gray chests and noses, and rusty brown bellies. Males are larger than females.
The food of South American fur sea lions mainly includes fish, cephalopods, crustaceans and some other invertebrates.
South American fur sea lions have a sense of territory. Males have the habit of migrating with the change of seasons, but most females do not.
South American fur sea lions are social and group-living animals. They often go fishing in groups at night.
In groups, they communicate with sound and touch. The sound communication between mo

The South American fur sea lion lives in the Atlantic and Pacific Oceans near South America, mostly concentrated along the Atlantic coast, especially the Uruguayan Islands, in Chile, southern Peru, Argentina, and Tierra del Fuego and the Falkland Islands in southern Brazil, and in the Juan Fernandez Islands in Colombia. The South American fur sea lion prefers rocky coasts, especially steeper slopes, because the shade of these slopes can help them avoid the hot sun. On the mainland along the coast of Argentina, a total of 12 islands where the South American fur sea lion lives have been recorded, and some islands are only used for their wintering. The South American fur sea lions living in Peru and Uruguay spend the breeding season on the coasts of Peru, Argentina, Uruguay and the Falkland Islands. When they are not breeding, they live in the ocean.

The fur of the South American Fur seal is dark gray.

Females and most immature individuals have a variety of colors, mostly gray on the neck and back, but some have white tips on the hair, making it silver-gray, and a pale yellow belly. It was named by Zimmermann in 1783.

Compared with other fur sea lions, the South American fur sea lion is more robust, with thinner ears and flippers; compared with the whiskers of other sea lions, the whiskers of the South American fur sea lion are shorter and milky white.

The South American fur sea lion is a professional diver, which can dive about 30 meters for 3 minutes, and the highest record is 170 meters for 7 minutes.

The South American fur sea lion is listed as Least Concern in the Red List of the World Conservation Union (IUCN).