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Where do free-living turbellarian flatworms live?
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Free-living turbellarian flatworms are cosmopolitan and can be found wherever there is moisture. They inhabit a diverse range of environments, including:1
- Aquatic Habitats: They occur in both salt water and fresh water, such as ponds, lakes, streams, and rapidly flowing rivers. Some species are pelagic, while others live at great depths or in coastal areas among sand, rocks, and vegetation.12
- Terrestrial Habitats: They are occasionally found in moist terrestrial environments, particularly in tropical and subtropical regions, living in soil, leaf litter, mud, and under rocks.12
- Specialized Environments: Some species inhabit caves, desert pools, or hot springs, demonstrating remarkable tolerance to extreme temperatures and osmotic changes.2
- Associations: Many turbellarians live in association with other organisms, such as marine algae, crustaceans, mollusks, and echinoderms, often utilizing them for shelter or nourishment.2