Scott Bowers   cc-by-nc

Halichoerus grypus (Grey Seal) is a species of mammals in the family true seals. They are native to Atlantic Ocean, the Palearctic, and The Nearctic. They are solitary carnivores. Individuals are known to live for 560.0700000000001 months and can grow to 2079.47 mm. Reproduction is viviparous. They rely on lift powered swimming and swimming to move around.

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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 67 attributes, including:

Known occurrences, collected specimens and observations of grey seal. View this species on GBIF