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[in-faw-nuh] /ˈɪnˌfɔ nə/
noun, plural infaunas, infaunae
[in-faw-nee] /ˈɪnˌfɔ ni/ (Show IPA)
the aggregate of organisms that burrow into and live in the bottom deposits of the ocean.
Origin of infauna
1910-15; in-1 + fauna; compare epifauna
Related forms
infaunal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for infauna
  • Impacts to beach infauna are expected to include reduced abundance and altered community structure.
  • It was feared that if discharged it might sink and lie on the bottom, killing all benthic infauna.
  • The third objective was to examine the spatial nature of the benthic infauna response to freshwater runoff.
  • Reference samples also had little infauna in each sample.
  • While benthic infauna have recolonized the cap, there is not indication of cap breach due to bioturbation.
infauna in Science
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. Compare epifauna.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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