An organism, especially a small animal or arthropod, that lives a hidden lifestyle in soil, leaf litter, rocks, or other concealed environments.
From Greek 'kryptos' (hidden) + 'zoite' (a combining form meaning 'animal living'), created to name organisms whose habitat is characteristically concealed.
Soil scientists sometimes call themselves 'cryptozoite hunters,' discovering tiny arthropods that have never been scientifically named—it's like exploring an alien world that exists under your backyard!
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