Ocean Atlas · Animals

Seals, octopuses, jellyfish and more

Subantarctic fur seal

Arctocephalus tropicalis

A small, pale-faced seal on a wave-washed rock. Subantarctic fur seals live on remote islands, and no sighting is ever a promise.

Least ConcernIn 5 Atlas countries

Least Concern (IUCN, 2015) means the species is not judged to be at high risk of extinction; it has recovered since hunting ended and its colonies are growing or stable.

Length

Males up to about 1.8 to 2 m (5.9 to 6.6 ft); females about 1.2 to 1.5 m (3.9 to 4.9 ft)

Weight

Males about 70 to 165 kg (154 to 364 lb); females about 25 to 67 kg (55 to 148 lb). Other sources give about 150 to 160 kg for males and about 50 kg for females.

Next to a person

A male is about as long as a tall adult and as heavy as one or two adults. A female is about the weight of one small adult.

What it eats

Mostly lanternfish (myctophids) and other fish, plus squid, crustaceans and occasionally seabirds such as rockhopper penguins. They hunt at night in shallow water.

Around people

Calm, give space

How it lives

Breeding runs from about October or November to January. Males defend harems, reported as about 6 to 20 females, and often have to wait until about 10 or 11 years old to hold one. Females first breed at about 5 years. A female has one pup after about 51 weeks of pregnancy and nurses it for about 11 months. Lifespans are about 15 to 25 years, depending on the source.

Where it goes

Subantarctic fur seals breed on remote islands north of Antarctica and feed at sea in the surrounding waters. One source says they can swim up to 1,500 km while looking for food. The sources I read do not describe a set migration route.

We only draw a journey on the map when scientists have tracked it or clearly documented it. For this animal we have not found one yet.

Populations

The IUCN lists the species as Least Concern (Hofmeyr, 2015). The last worldwide estimate, from 1987, was over 310,000 animals, and colonies are growing or at least holding steady. Three main breeding sites hold about 95% of the population: Amsterdam Island, Gough Island and the Prince Edward Islands. On the Prince Edward Islands, one source gives roughly 50,000 pups a year on Marion Island and 30,000 on Prince Edward Island. Other colonies include the Crozet Islands, Macquarie Island and the Tristan da Cunha group. Hunting for pelts before about 1810 cut numbers sharply.

Meet it respectfully

Fur seals on land can be defensive, especially adult males in the breeding season. Keep your distance, stay out of the way of their path to the water, and never chase, touch, feed or crowd them. Give mothers and pups extra space. I did not read local rules for any of the countries on this page, so follow your guide and local regulations.

Fun fact

Tap the bulb to light it up.

Where you may meet it

Subantarctic fur seal in the Ocean Atlas

Places we have researched where this animal is recorded. It is never guaranteed, and some places are for watching from the boat only.

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Sources for this page
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