What is the maximal age a Steller sea lion reaches?
An adult Steller sea lion (Eumetopias jubatus) usually gets as old as 30 years.
Steller sea lions are around 342 days in the womb of their mother. When born, they weight 18.28 kg (40.29 lbs) and measure 10 cm (0′ 4″). As a member of the Otariidae family (genus: Eumetopias), their offspring is 1 babies per pregnancy. Fully grown, they reach a bodylength of 2.7 meter (8′ 11″).
As a reference: Usually, humans get as old as 100 years, with the average being around 75 years. After being carried in the belly of their mother for 280 days (40 weeks), they grow to an average size of 1.65m (5′ 5″) and weight in at 62 kg (137 lbs), which is obviously highly individual.
The Steller sea lion (Eumetopias jubatus), also known as the Steller’s sea lion and “northern sea lion”, is a near-threatened species of sea lion in the northern Pacific. It is the sole member of the genus Eumetopias and the largest of the eared seals (Otariidae). Among pinnipeds, it is inferior in size only to the walrus and the two species of elephant seals. The species is named for the naturalist Georg Wilhelm Steller, who first described them in 1741. The Steller sea lion has attracted considerable attention in recent decades, owing to significant and largely unexplained declines in their numbers over an extensive portion of their northern range in Alaska.
Animals of the same family as a Steller sea lion
Not really brothers and sisters, but from the same biological family (Otariidae):
- New Zealand sea lion with 1 babies per pregnancy
- Subantarctic fur seal becoming 23 years old
- California sea lion becoming 30 years old
- Northern fur seal becoming 35 years old
- Arctocephalus forsteri becoming 15 years old
- Antarctic fur seal becoming 23 years old
- Guadalupe fur seal becoming 24 years old
- South American fur seal becoming 21 years old
- Australian sea lion becoming 16 years old
- Galápagos fur seal becoming 22 years old
Animals that reach the same age as Steller sea lion
With an average age of 30 years, Steller sea lion are in good companionship of the following animals:
- Hawaiian monk seal usually reaching 30 years
- Water buffalo usually reaching 28.25 years
- Eastern gray squirrel usually reaching 24 years
- Black-headed spider monkey usually reaching 24 years
- Southern hairy-nosed wombat usually reaching 24.5 years
- Brown woolly monkey usually reaching 30 years
- Pacific white-sided dolphin usually reaching 25 years
- Collared mangabey usually reaching 30 years
- Bighorn sheep usually reaching 24 years
- Bonnet macaque usually reaching 30 years
Animals with the same number of babies Steller sea lion
The same number of babies at once (1) are born by:
- Long-legged bat
- Pale spear-nosed bat
- Greater horseshoe bat
- Olive baboon
- Alpine ibex
- Commerson’s roundleaf bat
- Dwarf hutia
- Grant’s golden mole
- Silky cuscus
- Davis’s round-eared bat
Weighting as much as Steller sea lion
A fully grown Steller sea lion reaches around 383.23 kg (844.88 lbs). So do these animals:
- Malayan tapir weighting 309.61 kilos (682.57 lbs) on average
- Risso’s dolphin weighting 387.25 kilos (853.74 lbs) on average
- Horse weighting 401.8 kilos (885.82 lbs) on average
- Amazonian manatee weighting 418 kilos (921.53 lbs) on average
- Leopard seal weighting 352.84 kilos (777.88 lbs) on average
- Muskox weighting 312.67 kilos (689.32 lbs) on average
- Grévy’s zebra weighting 405.5 kilos (893.97 lbs) on average
- Polar bear weighting 373.35 kilos (823.09 lbs) on average
- Pygmy sperm whale weighting 431.25 kilos (950.74 lbs) on average
- African manatee weighting 454 kilos (1000.9 lbs) on average
Animals as big as a Steller sea lion
Those animals grow as big as a Steller sea lion:
- Giant eland with 2.52 meter (8′ 4″)
- Dwarf sperm whale with 2.16 meter (7′ 2″)
- Gayal with 2.7 meter (8′ 11″)
- Moose with 2.83 meter (9′ 4″)
- Short-beaked common dolphin with 2.44 meter (8′ 1″)
- Baird’s tapir with 2.2 meter (7′ 3″)
- Tamaraw with 2.2 meter (7′ 3″)
- Weddell seal with 2.55 meter (8′ 5″)
- Crabeater seal with 2.28 meter (7′ 6″)
- Crabeater seal with 2.27 meter (7′ 6″)