Image of Atlantic Walrus
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Atlantic Walrus

Odobenus rosmarus rosmarus (Linnaeus 1758)

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

Individuals could grow to 320 cm. Reproduction was viviparous. They rely on lift powered swimming to move around.

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  • 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 13 attributes, including:

Known occurrences, collected specimens and observations of Atlantic Walrus. View this species on GBIF