Protista live anywhere, provided there is even a little amount of water. There are marine and freshwater species that live both floating on the water or on the seabed. A small water pond is enough for these micro-organisms to live; they can usually be found even in the thin film of water that covers the soil particles.
Aquatic protozoan
Paramecium
Ciliated protozoan Ciliophora
Stentor
Vorticella
Paramecium caudatum
Unicellular alga
Unicellular algae
Trypanosoma brucei
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