dcsimg
Image of Olive Ridley
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Olive Ridley

Lepidochelys olivacea (Eschscholtz 1829)

    locomotion

  • crawling
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    (hatchling)
  • lift powered swimming
    • 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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