Mammalia |
Carnivora |
Phocidae
Environment: milieu / climate zone / depth range / distribution range
Ecology
Bathydemersal. Subtropical; 90°N - 0°S, 126°E - 115°W
Pacific Ocean and the Arctic: Eastern side of Ostrov Sakhalin to northern Hokkaido. Subtropical to polar.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?  range ? - ? cm Max length : 170 cm TL male/unsexed; (Ref. 1394); 160 cm TL (female); max. published weight: 123.0 kg (Ref. 1394)
Inhabit the southern edges of the pack ice from winter to early summer and coastal areas including river mouths, in late summer and autumn. Diet composition varies with the age of the seal; Newly weaned pups feed on small crustaceans, advance to schooling fishes, larger crustaceans, and octopuses, and finally graduate to bottom dwelling fish and cephalopods (Ref. 1394). Inhabits the southern edges of the pack ice from winter to early summer and coastal areas including river mouths, in late summer and autumn. Diet composition varies with the age of the seal; newly weaned pups feed on small crustaceans, advance to schooling fishes, larger crustaceans, and octopuses, and finally graduate to bottom dwelling fish and cephalopods (Ref. 1394). Those in their first year tend to eat mostly small crustaceans, algae, sticks and debris; 1 to 4 year olds mostly eat fishes, larger shrimps, and octopus, occasionally; 5 year olds consumed more benthic invertebrates like crabs and octopus (Ref. 119414).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Jefferson, T.A., S. Leatherwood and M.A. Webber 1993 FAO species Identification Guide: Marine Mammals of the World. Rome, FAO. 320 p. + 587 figures. (Ref. 1394)
IUCN Red List Status
(Ref. 130435: Version 2025-2 (Global))
CITES status (Ref. 108899)
Not Evaluated
Not Evaluated
Threat to humans
Human uses
Fisheries: commercial
FAO - Fisheries: species profile, landings search; Publication: search | FishSource | Sea Around Us
Tools
More information
Life cycleReproductionMaturityFecunditySpawningEggsEgg developmentLarvae PhysiologyOxygen consumption
Human RelatedStamps, coins, misc.
Internet sources
Estimates based on models
Resilience (Ref. 69278): |
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.16-0.44) |
Fishing Vulnerability (Ref. 71543) |
High to very high vulnerability (72 of 100). |
Price category (Ref. 80766): |
Unknown. |