Odobenus rosmarus, Walrus : fisheries
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Odobenus rosmarus   (Linnaeus, 1758)

Walrus

Native range | All suitable habitat | Point map | Year 2050
This map was computer-generated and has not yet been reviewed.
Odobenus rosmarus  AquaMaps  Data sources: GBIF OBIS
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Image of Odobenus rosmarus (Walrus)
Odobenus rosmarus
Picture by FAO

Classification / Names Common names | Synonyms | CoL | ITIS | WoRMS

Mammalia | Carnivora | Odobenidae

Environment: milieu / climate zone / depth range / distribution range Ecology

Bathydemersal; depth range 0 - 91 m (Ref. 124244).  Temperate; 84°N - 54°N, 180°W - 180°E

Distribution Territories | FAO areas | Ecosystems | Occurrences | Introductions

Northern Atlantic, Northern Pacific, and the Arctic: from Arctic Canada, northern Greenland, south to Denmark and east to Russia and Alaska. Odobenus rosmarus rosmarus: Russia, Canada, Greenland, Iceland, Norway, UK, Barents Sea, Netherlands, Belgium, Atlantic Ocean, Bay of Biscay, Hudson Bay, Kara Sea, Prince Edward Island; Odobenus rosmarus laptevi: Russia, Laptev Sea, Kara Sea, East Siberian Sea; Odobenus rosmarus divergens: Arctic Ocean, Bering Sea, Chukchi Sea, Alaska, Russia, Beaufort Sea, Sea of Okhotsk, Japan, Kamchatka.

Length at first maturity / Size / Weight / Age

Maturity: Lm ?  range ? - ? cm Max length : 380 cm TL male/unsexed; (Ref. 99323); 300 cm TL (female); max. published weight: 1.9 t (Ref. 99323); max. published weight: 1.9 t

Biology     Glossary (e.g. epibenthic)

Found in shallow water and coastal habitats, usually associated with pack ice; regularly haul out on sandy beaches, rocky shores, and ice floes to rest and moult. Feeds on benthic invertebrates (i.e. clams, worms, snails, shrimp and slow-moving fish). Maximum measurements of female species based from Ref. 1394. Found in shallow water and coastal habitats, usually associated with pack ice; regularly haul out on sandy beaches, rocky shores, and ice floes to rest and moult. Feeds on benthic invertebrates (i.e. clams, worms, snails, shrimp and slow-moving fish) (Ref. 1394).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference References | Coordinator | Collaborators

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))

  Vulnerable (VU) (A3c); Date assessed: 05 February 2016

CITES status (Ref. 108899)

Appendix III: International trade cooperation

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Human uses

Fisheries: commercial
FAO - Fisheries: species profile, landings search; Publication: search | FishSource | Sea Around Us

Tools

E-book | Field guide

More information

Trophic Ecology
Food items (preys)
Diet composition
Food consumption
Predators
Ecology
Ecology
Population dynamics
Growth
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Abundance
Life cycle
Reproduction
Maturity
Fecundity
Spawning
Eggs
Egg development
Larvae
Distribution
Territories
FAO areas
Ecosystems
Occurrences
Introductions
Physiology
Oxygen consumption
Human Related
Stamps, coins, misc.
Outreach
Collaborators
Taxonomy
Common names
Synonyms
Morphology
Pictures
References
References

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO - Fisheries: species profile, landings search; Publication: search | Fishipedia | GenBank (genome, nucleotide) | GloBI | Gomexsi | Google Books | Google Scholar | Google | PubMed | Tree of Life | Wikipedia (Go, Search) | Zoological Record

Estimates based on models

Resilience
(Ref. 69278):		 Medium, minimum population doubling time 1.4 - 4.4 years (K=0.1-0.31)
Fishing Vulnerability
(Ref. 71543)		 Very high vulnerability (76 of 100).
Price category
(Ref. 80766):		 Unknown.