How big does a Caspian seal get? Here is an overview over the average adult age:
A grown Caspian seal (Pusa caspica) reaches an average size of 1.41 meter (4′ 8″).
When born, they have an average size of 0 cm (0′ 0″). During their lifetime of about 50 years, they grow from 4.18 kg (9.22 lbs) to 62.33 kg (137.41 lbs). A Caspian seal has 1 babies at once. The Caspian seal (genus: Pusa) is a member of the family Phocidae.
As a reference: Humans reach an average body size of 1.65m (5′ 5″) while carrying 62 kg (137 lbs). A human woman is pregnant for 280 days (40 weeks) and on average become 75 years old.

The Caspian seal (Pusa caspica) is one of the smallest members of the earless seal family and unique in that it is found exclusively in the brackish Caspian Sea. They are found not only along the shorelines, but also on the many rocky islands and floating blocks of ice that dot the Caspian Sea. In winter, and cooler parts of the spring and autumn season, these marine mammals populate the Northern Caspian. As the ice melts in the warmer season, they can be found on the mouths of the Volga and Ural Rivers, as well as the southern latitudes of the Caspian where cooler waters can be found due to greater depth.Evidence suggests the seals are descended from Arctic ringed seals that reached the area from the north during an earlier part of the Quaternary period and became isolated in the landlocked Caspian Sea when continental ice sheets melted.
Animals of the same family as a Caspian seal
We found other animals of the Phocidae family:
- Ringed seal with a size of 1.29 meter (4′ 3″)
- Harp seal with a size of 1.72 meter (5′ 8″)
- Caribbean monk seal with a size of 2.29 meter (7′ 7″)
- Bearded seal with a size of 2.3 meter (7′ 7″)
- Harbor seal with a size of 1.61 meter (5′ 4″)
- Ross seal with a size of 2.07 meter (6′ 10″)
- Ribbon seal with a size of 1.54 meter (5′ 1″)
- Spotted seal with a size of 1.64 meter (5′ 5″)
- Hawaiian monk seal with a size of 2.24 meter (7′ 5″)
- Crabeater seal with a size of 2.28 meter (7′ 6″)
Animals with the same size as a Caspian seal
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Caspian seal:
- Mule deer with a size of 1.52 meter (5′ 0″)
- Llama with a size of 1.66 meter (5′ 6″)
- Pronghorn with a size of 1.31 meter (4′ 4″)
- Eld’s deer with a size of 1.65 meter (5′ 5″)
- Sea otter with a size of 1.44 meter (4′ 9″)
- Javan warty pig with a size of 1.25 meter (4′ 2″)
- Mongolian gazelle with a size of 1.24 meter (4′ 1″)
- Caspian seal with a size of 1.41 meter (4′ 8″)
- Sika deer with a size of 1.2 meter (4′ 0″)
- Grant’s gazelle with a size of 1.53 meter (5′ 1″)
Animals with the same litter size as a Caspian seal
Here is a list of animals that have the same number of babies per litter (1) as a Caspian seal:
- Goodfellow’s tree-kangaroo
- Arabian gazelle
- White-bellied free-tailed bat
- Red-rumped agouti
- Dwarf slit-faced bat
- Cyclops roundleaf bat
- Montane guinea pig
- Sika deer
- Bonobo
- Eastern forest bat
Animals with the same life expectancy as a Caspian seal
Completely different animals, but becoming as old as a Caspian seal:
- Sloth bear with an average maximal age of 40 years
- Common minke whale with an average maximal age of 50 years
- Dromedary with an average maximal age of 40 years
- Long-finned pilot whale with an average maximal age of 45 years
- Pantropical spotted dolphin with an average maximal age of 46 years
- Asinus with an average maximal age of 47 years
- Melon-headed whale with an average maximal age of 47 years
- Wedge-capped capuchin with an average maximal age of 41 years
- Caspian seal with an average maximal age of 50 years
- Pygmy hippopotamus with an average maximal age of 43.75 years
Animals with the same weight as a Caspian seal
As a comparison, here are some other animals that weight as much as the Pusa caspica:
- Grant’s gazelle with a weight of 55.46 kilos (122.27 lbs)
- Bornean orangutan with a weight of 52.97 kilos (116.78 lbs)
- West Caucasian tur with a weight of 60.73 kilos (133.89 lbs)
- Chital with a weight of 69.5 kilos (153.22 lbs)
- Alpine ibex with a weight of 69.42 kilos (153.04 lbs)
- Northern fur seal with a weight of 55.58 kilos (122.53 lbs)
- Celebes warty pig with a weight of 53.46 kilos (117.86 lbs)
- Dama gazelle with a weight of 70.4 kilos (155.21 lbs)
- Grant’s gazelle with a weight of 55 kilos (121.25 lbs)
- Himalayan tahr with a weight of 68.26 kilos (150.49 lbs)
