rotifer
/ˈroʊtɪfər/
noun
- A very small aquatic animal with a ring of tiny hairs (cilia) that it uses for swimming and feeding.
- Rotifers are important members of freshwater ecosystems, eating bacteria and algae.
- The pond water sample contained hundreds of tiny rotifers.
- Under the microscope, we could see a rotifer spinning its cilia to draw in food.