Living organisms that float or drift in water, including plankton and other suspended biological particles.
From 'bio-' (life) and Greek 'seston' (things that are sifted or drifting), a specialized term in limnology and marine biology.
Bioseston is like an invisible soup in the ocean and lakes—it's the foundation of aquatic food webs, and most of it's too small to see without a microscope!
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