sentence: Planaria are free-living.
sentences_before: Planaria' is a small aquatic genus of flatworm. The term is also used for other similar flatworms. They are fresh water animals which move in a smooth wave-like manner.
sentences_after: They can live in fresh water or very damp soil, depending on the type.
concept_name: Planaria
headings: Planaria
categories: Flatworms