How big does a Grey seal get? Here is an overview over the average adult age:
A grown Grey seal (Halichoerus grypus) reaches an average size of 2.08 meter (6′ 10″).
When born, they have an average size of 0 cm (0′ 0″). During their lifetime of about 46.67 years, they grow from 14 kg (30.86 lbs) to 197.29 kg (434.94 lbs). A Grey seal has 1 babies at once. The Grey seal (genus: Halichoerus) 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 grey seal (Halichoerus grypus) is found on both shores of the North Atlantic Ocean. It is a large seal of the family Phocidae, which are commonly referred to as “true seals” or “earless seals”. It is the only species classified in the genus Halichoerus. Its name is spelled gray seal in the US; it is also known as Atlantic seal and the horsehead seal.
Animals of the same family as a Grey seal
We found other animals of the Phocidae family:
- Ringed seal with a size of 1.29 meter (4′ 3″)
- Weddell seal with a size of 2.55 meter (8′ 5″)
- Ribbon seal with a size of 1.54 meter (5′ 1″)
- Mediterranean monk seal with a size of 2.6 meter (8′ 7″)
- Baikal seal with a size of 1.28 meter (4′ 3″)
- Harp seal with a size of 1.72 meter (5′ 8″)
- Southern elephant seal with a size of 3.69 meter (12′ 2″)
- Caspian seal with a size of 1.41 meter (4′ 8″)
- Hooded seal with a size of 2.33 meter (7′ 8″)
- Caribbean monk seal with a size of 2.29 meter (7′ 7″)
Animals with the same size as a Grey seal
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Grey seal:
- Lesser kudu with a size of 1.68 meter (5′ 6″)
- Mountain zebra with a size of 2.35 meter (7′ 9″)
- Hawaiian monk seal with a size of 2.24 meter (7′ 5″)
- Giant forest hog with a size of 2.03 meter (6′ 8″)
- Sable antelope with a size of 2.04 meter (6′ 9″)
- Spectacled bear with a size of 1.77 meter (5′ 10″)
- South American tapir with a size of 2.01 meter (6′ 7″)
- Tiger with a size of 1.83 meter (6′ 0″)
- Baiji with a size of 1.7 meter (5′ 8″)
- Marsh deer with a size of 1.72 meter (5′ 8″)
Animals with the same litter size as a Grey seal
Here is a list of animals that have the same number of babies per litter (1) as a Grey seal:
- Naked-rumped pouched bat
- Tana River mangabey
- Bongo (antelope)
- Greater nectar bat
- Moonrat
- Collared mangabey
- Narwhal
- Nilgiri langur
- Queen of Sheba’s gazelle
- Siamang
Animals with the same life expectancy as a Grey seal
Completely different animals, but becoming as old as a Grey seal:
- Humboldt’s white-fronted capuchin with an average maximal age of 44 years
- Caspian seal with an average maximal age of 50 years
- Ringed seal with an average maximal age of 46 years
- White rhinoceros with an average maximal age of 50 years
- Bowhead whale with an average maximal age of 40 years
- Agile gibbon with an average maximal age of 44 years
- Polar bear with an average maximal age of 38.17 years
- Colombian white-faced capuchin with an average maximal age of 54.75 years
- Caspian seal with an average maximal age of 50 years
- Burchell’s zebra with an average maximal age of 40 years
Animals with the same weight as a Grey seal
As a comparison, here are some other animals that weight as much as the Halichoerus grypus:
- Crabeater seal with a weight of 225 kilos (496.04 lbs)
- Ross seal with a weight of 208.63 kilos (459.95 lbs)
- Lichtenstein’s hartebeest with a weight of 168.7 kilos (371.92 lbs)
- Lion with a weight of 158.75 kilos (349.98 lbs)
- Lichtenstein’s hartebeest with a weight of 168 kilos (370.38 lbs)
- Greater kudu with a weight of 205.53 kilos (453.12 lbs)
- South American sea lion with a weight of 193.67 kilos (426.97 lbs)
- Fraser’s dolphin with a weight of 164 kilos (361.56 lbs)
- Gemsbok with a weight of 187.6 kilos (413.59 lbs)
- Pygmy hippopotamus with a weight of 231 kilos (509.27 lbs)