It is hard to guess what a Ross seal weights. But we have the answer:
An adult Ross seal (Ommatophoca rossii) on average weights 208.63 kg (459.94 lbs).
The Ross seal is from the family Phocidae (genus: Ommatophoca). It is usually born with about 17 kg (37.48 lbs). They can live for up to 21 years. When reaching adult age, they grow up to 2.07 meter (6′ 10″).
As a reference: An average human weights in at 62 kg (137 lbs) and reaches an average size of 1.65m (5′ 5″). Humans spend 280 days (40 weeks) in the womb of their mother and reach around 75 years of age.
The Ross seal (Ommatophoca rossii) is a true seal (family Phocidae) with a range confined entirely to the pack ice of Antarctica. It is the only species of the genus Ommatophoca. First described during the Ross expedition in 1841, it is the smallest, least abundant and least well known of the Antarctic pinnipeds. Its distinctive features include disproportionately large eyes, whence its scientific name (Ommato- meaning “eye”, and phoca meaning “seal”), and complex, trilling and siren-like vocalizations. Ross seals are brachycephalic, as they have a short broad muzzle and have the shortest fur of any other seal.
Animals of the same family as a Ross seal
We found other animals of the Phocidae family:
- Harbor seal bringing 87.31 kilos (192.49 lbs) to the scale
- Bearded seal bringing 280 kilos (617.29 lbs) to the scale
- Harp seal bringing 132.25 kilos (291.56 lbs) to the scale
- Hawaiian monk seal bringing 223 kilos (491.63 lbs) to the scale
- Baikal seal bringing 89.5 kilos (197.31 lbs) to the scale
- Ribbon seal bringing 90 kilos (198.42 lbs) to the scale
- Caspian seal bringing 62.33 kilos (137.41 lbs) to the scale
- Grey seal bringing 197.29 kilos (434.95 lbs) to the scale
- Ribbon seal bringing 90 kilos (198.42 lbs) to the scale
- Southern elephant seal bringing 1600 kilos (3527.39 lbs) to the scale
Animals with the same weight as a Ross seal
As a comparison, here are some other animals that weight as much as the Ommatophoca rossii:
- Dwarf sperm whale with a weight of 183 kilos (403.45 lbs)
- South American tapir with a weight of 167.75 kilos (369.83 lbs)
- Equus onager with a weight of 205 kilos (451.95 lbs)
- Lichtenstein’s hartebeest with a weight of 168.7 kilos (371.92 lbs)
- South American sea lion with a weight of 193.67 kilos (426.97 lbs)
- Sambar deer with a weight of 177.52 kilos (391.36 lbs)
- Australian sea lion with a weight of 189.14 kilos (416.98 lbs)
- Philippine warty pig with a weight of 189.4 kilos (417.56 lbs)
- Crabeater seal with a weight of 225 kilos (496.04 lbs)
- Pygmy killer whale with a weight of 170 kilos (374.79 lbs)
Animals with the same size as a Ross seal
Not that size really matters, but it makes things comparable. So here are a couple of animals that are as big as Ross seal:
- South American tapir with a size of 2.01 meter (6′ 7″)
- Amazon river dolphin with a size of 2.12 meter (7′ 0″)
- South American sea lion with a size of 2.12 meter (7′ 0″)
- Hawaiian monk seal with a size of 2.24 meter (7′ 5″)
- Llama with a size of 1.66 meter (5′ 6″)
- Saola with a size of 1.75 meter (5′ 9″)
- Dwarf sperm whale with a size of 2.16 meter (7′ 2″)
- Indo-Pacific bottlenose dolphin with a size of 2.37 meter (7′ 10″)
- Lion with a size of 1.84 meter (6′ 1″)
- Spectacled bear with a size of 1.77 meter (5′ 10″)
Animals with the same life expectancy as a Ross seal
Completely different animals, but becoming as old as a Ross seal:
- Impala with an average maximal age of 17.75 years
- Muskox with an average maximal age of 24 years
- Takin with an average maximal age of 19.5 years
- Dorcas gazelle with an average maximal age of 17.42 years
- Mountain goat with an average maximal age of 19.17 years
- Mountain gazelle with an average maximal age of 18.25 years
- Red-shanked douc with an average maximal age of 25 years
- Blue wildebeest with an average maximal age of 21.5 years
- Bighorn sheep with an average maximal age of 24 years
- Bontebok with an average maximal age of 21.67 years