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Vorticella living on a leaf of Elodea

English name: Vorticella
Scientific name: Vorticella sp.
Familia: Vorticellidae
Classis: Ciliata
Phylum: Ciliophora
Regnum: Protista
Vorticella is a sessile ciliate. The cilia are concentrated around the mouth field, allowing efficient uptake of nutrients from the surroundings. Vorticella are attached to the substrate through a contractile stalk.