illustrated chart showcasing diverse microscopic organisms, including various algae, protozoa, and other single-celled life forms

algae protozoa microorganism organism cell singlecelled microscopic life biology science nature illustration chart diagram drawing botany zoology research education study specimen flora fauna aquatic marine freshwater plankton phytoplankton zooplankton ocean sea water ecology environment organisms protists amoeba paramecium diatoms dinoflagellates euglena coccolithophores foraminifera radiolarians ciliates flagellates spores