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
Upload your photos 
 | All pictures | Google image |
Image of Odobenus rosmarus (Walrus)
Odobenus rosmarus

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

Mammalia | Carnivora | Odobenidae

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

Bathydemersal; depth range ? - 91 m (Ref. 124244).  Temperate; 90°N - 0°S, 180°W - 180°E

Distribution Countries | FAO areas | Ecosystems | Occurrences | Introductions

Atlantic Ocean, Northern Pacific, and the Arctic. Greenland, Canada, Norway, Alaska, Russia (Ref. 1394), Iceland, UK, Netherlands, Belgium, Japan, Beaufort Sea, Sea of Okhotsk, Bering Sea, Chukchi Sea, Atlantic Ocean, Barents Sea, Arctic Ocean, Laptev Sea, Hudson Bay, Kara Sea, East Barents Sea, East Siberian Sea, Kamchatka, Celtic-Biscay Shelf (Ref. 1522); 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. (Ref. 1394)

IUCN Red List Status (Ref. 130435)

  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: landings, species profile | FishSource | Sea Around Us

Tools

E-book | Field guide

More information

Countries
FAO areas
Ecosystems
Occurrences
Introductions
Stocks
Ecology
Diet
Food items
Common names
Synonyms
Predators
Reproduction
Maturity
Spawning
Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
Length-length
Morphology
Larvae
Abundance
References
Mass conversion
Collaborators
Pictures

Internet sources

BHL | BOLD Systems | CISTI | DiscoverLife | FAO(Fisheries: species profile; 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

Preferred temperature (Ref. 115969): 0.3 - 10.7, mean 2.6 (based on 3262 cells).
Resilience (Ref. 69278): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.1-0.31).
Vulnerability (Ref. 71543): High to very high vulnerability (72 of 100).
Price category (Ref. 80766): Unknown.