How many baby Northern elephant seals are in a litter?
A Northern elephant seal (Mirounga angustirostris) usually gives birth to around 1 babies.
Each of those little ones spend around 268 days as a fetus before they are released into the wild. Upon birth, they weight 34.39 kg (75.82 lbs) and measure 3.2 cm (0′ 2″). They are a member of the Phocidae family (genus: Mirounga). An adult Northern elephant seal grows up to a size of 3.72 meter (12′ 3″).
To have a reference: Humans obviously usually have a litter size of one ;). Their babies are in the womb of their mother for 280 days (40 weeks) and reach an average size of 1.65m (5′ 5″). They weight in at 62 kg (137 lbs), which is obviously highly individual, and reach an average age of 75 years.
The northern elephant seal (Mirounga angustirostris) is one of two species of elephant seal (the other is the southern elephant seal). It is a member of the family Phocidae (true seals). Elephant seals derive their name from their great size and from the male’s large proboscis, which is used in making extraordinarily loud roaring noises, especially during the mating competition. Sexual dimorphism in size is great. Correspondingly, the mating system is highly polygynous; a successful male is able to impregnate up to 50 females in one season.
Other animals of the family Phocidae
Northern elephant seal is a member of the Phocidae, as are these animals:
- Spotted seal with 1 babies per pregnancy
- Harp seal with 1 babies per pregnancy
- Caspian seal with 1 babies per pregnancy
- Caspian seal with 1 babies per pregnancy
- Crabeater seal becoming 39 years old
- Southern elephant seal with 1 babies per pregnancy
- Grey seal with 1 babies per pregnancy
- Baikal seal with 1 babies per pregnancy
- Harp seal with 1 babies per pregnancy
- Bearded seal with 1 babies per pregnancy
Animals that share a litter size with Northern elephant seal
Those animals also give birth to 1 babies at once:
- Northern naked-tailed armadillo
- Lesser noctule
- Crested mona monkey
- Striped possum
- Siamang
- Thorold’s deer
- Silky cuscus
- Impala
- Soemmerring’s gazelle
- Fraser’s dolphin
Animals that get as old as a Northern elephant seal
Other animals that usually reach the age of 20.25 years:
- Ursine tree-kangaroo with 20.17 years
- Greater mouse-deer with 16.25 years
- Koala with 20 years
- White-nosed coati with 17.67 years
- Coyote with 21.83 years
- Alpine ibex with 22.25 years
- Brown greater galago with 18.75 years
- Brown hyena with 17 years
- Clouded leopard with 17 years
- Common wallaroo with 24 years
Animals with the same weight as a Northern elephant seal
What other animals weight around 1116.2 kg (2460.79 lbs)?
- Black rhinoceros usually reaching 986.47 kgs (2174.79 lbs)
- Walrus usually reaching 1045.33 kgs (2304.56 lbs)
- Water buffalo usually reaching 924.25 kgs (2037.62 lbs)
- Northern giraffe usually reaching 959.83 kgs (2116.06 lbs)
- Narwhal usually reaching 938.06 kgs (2068.07 lbs)
- Hector’s beaked whale usually reaching 1000 kgs (2204.62 lbs)
- Sumatran rhinoceros usually reaching 1038.08 kgs (2288.57 lbs)
Animals with the same size as a Northern elephant seal
Also reaching around 3.72 meter (12′ 3″) in size do these animals:
- Pygmy beaked whale gets as big as 3.72 meter (12′ 3″)
- Indian rhinoceros gets as big as 3.74 meter (12′ 4″)
- Northern giraffe gets as big as 4.18 meter (13′ 9″)
- Beluga whale gets as big as 4.25 meter (14′ 0″)
- White-beaked dolphin gets as big as 3.05 meter (10′ 1″)
- Leopard seal gets as big as 3.05 meter (10′ 0″)
- Javan rhinoceros gets as big as 3.1 meter (10′ 3″)
- Southern elephant seal gets as big as 3.69 meter (12′ 2″)
- Andrews’ beaked whale gets as big as 4.26 meter (14′ 0″)
- African manatee gets as big as 3.5 meter (11′ 6″)