What low level animals contain vacuole?

Paramecium is a single-celled organism that contains vacuoles. Paramecium is a slipper-shaped protozoan that lives in freshwater environments. It has a complex cellular structure, including two nuclei, two contractile vacuoles, and numerous food vacuoles. The contractile vacuoles help the paramecium regulate its water balance, while the food vacuoles help it digest its food.