Infauna meaning

ĭn'fô'nə
Aquatic animals, such as clams or burrowing worms, that live beneath the surface of a sea or lake floor.
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The animals burrowing into marine or freshwater sediment.
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Benthic animals that live in the substrate of a body of water, especially in a soft sea bottom. Infauna usually construct tubes or burrows and are commonly found in deeper and subtidal waters. Clams, tubeworms, and burrowing crabs are infaunal animals.
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An aquatic organism that lives within the dominant medium of its environment.

Burrowing bivalves are infauna that filter-feed from within seafloor sediments.

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Origin of infauna

  • in– fauna
    From American Heritage Dictionary of the English Language, 5th Edition