the aggregate of animals that burrow into and live in the bottom deposits of an ocean, river, or lake.
- infaunal, adjective
- Compare epifauna.
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Scientific definitions for infauna
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.
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