Walrus

Odobenus rosmarus (Linnaeus 1758)

2004 California Academy of Sciences cc-by-nc-sa-3.0

Odobenus rosmarus (Walrus) is a species of mammals in the family walruses. They are listed as vulnerable by IUCN and in cites appendix iii. They are native to Atlantic Ocean, Arctic Ocean, and Pacific Ocean. They are omnivores. Individuals are known to live for 480 months and can grow to 320 cm. They have parental care (female provides care). They rely on swimming and lift powered swimming to move around.

URI: http://eol.org/schema/terms/vulnerable
Definition: A taxon is Vulnerable when the best available evidence indicates that it meets any of the criteria A to E for Vulnerable, and it is therefore considered to be facing a high risk of extinction in the wild.
Source: http://apiv3.iucnredlist.org/api/v3/taxonredirect/15106

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URI: http://eol.org/schema/terms/CITES_III
Definition: Appendix III is a list of species included at the request of a Party that already regulates trade in the species and that needs the cooperation of other countries to prevent unsustainable or illegal exploitation. International trade in specimens of species listed in this Appendix is allowed only on presentation of the appropriate permits or certificates. (See Article V of the Convention)
Source: https://www.speciesplus.net/#/taxon_concepts/9179/legal

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URI: http://www.marineregions.org/mrgid/1902

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URI: http://www.marineregions.org/mrgid/1906

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URI: http://www.marineregions.org/mrgid/1903

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URI: http://www.wikidata.org/entity/Q164509
Definition: organism consuming a variety of foods, usually including both plants and animals

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URI: http://eol.org/schema/terms/parentalCareFemale
Definition: the female feeds and nurtures offspring
Attribution: Richard M. Sibly, Christopher C. Witt, Natalie A. Wright, Chris Venditti, Walter Jetz, and James H. Brown. 2012. Energetics, lifestyle, and reproduction in birds. PNAS 109(27):10937-10941, doi:10.1073/pnas.1206512109

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URI: http://purl.obolibrary.org/obo/GO_0036268
Definition: Self-propelled movement of an organism from one location to another through water, often by means of active fin movement.

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URI: https://eol.org/schema/terms/lift_based_swimming
Definition: Hydrofoils, or fins, are used to push against the water to create a normal force to provide thrust, propelling the animal through water. The reduction of fin cross-sectional area helps to minimize drag, and therefore increase efficiency. Regardless of size of the animal, at any particular speed, maximum possible lift is proportional to (wing area) x (speed)<sup>2</sup>. Dolphins and whales have large, horizontal caudal hydrofoils, while many fish and sharks have vertical caudal hydrofoils.

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EOL has data for 69 attributes, including:

age at eye opening
- URI: http://eol.org/schema/terms/AgeAtEyeOpening
- Definition: Age at which both eyes are fully open after birth.
- Comment: Add to VT postnatal growth trait ontology
- Attribution: Kate E. Jones, Jon Bielby, Marcel Cardillo, Susanne A. Fritz, Justin O''Dell, C. David L. Orme, Kamran Safi, Wes Sechrest, Elizabeth H. Boakes, Chris Carbone, Christina Connolly, Michael J. Cutts, Janine K. Foster, Richard Grenyer, Michael Habib, Christopher A. Plaster, Samantha A. Price, Elizabeth A. Rigby, Janna Rist, Amber Teacher, Olaf R. P. Bininda-Emonds, John L. Gittleman, Georgina M. Mace, and Andy Purvis. 2009. PanTHERIA, a species-level database of life history, ecology, and geography of extant and recently extinct mammals. Ecology 90:2648. http://esapubs.org/archive/ecol/E090/184/
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0 days
age at maturity
- URI: http://eol.org/schema/terms/AgeAtMaturity
- Definition: Age at the first successful reproduction.
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1825 days
body shape
- URI: http://eol.org/schema/terms/BodyShape
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bilaterally symmetric
- URI: http://purl.obolibrary.org/obo/PATO_0001324
- Definition: being symmetric about a plane running from frontal end to caudal end (head to tail), and having nearly identical right and left halves
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diet breadth
- URI: http://eol.org/schema/terms/DietBreadth
- Definition: Number of dietary categories eaten by an organism.
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6
diet includes
- URI: http://eol.org/schema/terms/Diet
- Definition: Information about the items eaten by this organism.
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mollusks
- URI: https://www.wikidata.org/entity/Q25326
- Definition: phylum of invertebrate animals
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dispersal age
- URI: http://eol.org/schema/terms/DispersalAge
- Definition: Age at which young permanently leave the parent, parental group, social group or any associated territories.
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729.99 days
ecomorphological guild
- URI: http://eol.org/schema/terms/EcomorphologicalGuild
- Definition: organisms that share certain morphological traits due to adaptation to similar environments and ecological roles
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fossorial and/or ground dwelling
- URI: http://eol.org/schema/terms/fossorialOrGround
- Definition: An organism that is adapted to terrestrial life below ground, on or near the ground.
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habitat breadth
- URI: http://eol.org/schema/terms/HabitatBreadth
- Definition: Number of habitat layers used by an organism
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2
inter-birth interval
- URI: http://eol.org/schema/terms/InterBirthInterval
- Definition: The length of time between successive births of a female.
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834 days
litters per year
- URI: http://eol.org/schema/terms/LittersPerYear
- Definition: Number of litters per female per year
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0.5
mating system
- URI: http://eol.org/schema/terms/MatingSystem
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not monogamous
- URI: http://eol.org/schema/terms/notMonogamous
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native range includes
- URI: http://eol.org/schema/terms/NativeRange
- Definition: Lists jurisdictions in which a given organism is a member of the undisturbed fauna or flora.
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Atlantic Ocean
- URI: http://www.marineregions.org/mrgid/1902
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Known occurrences, collected specimens and observations of Walrus. View this species on GBIF

2004 California Academy of Sciences cc-by-nc-sa-3.0

Walrus includes 2 children: