Anemones and clownfish live closely together. The clownfish, while being provided with food, cleans away fish and algae leftovers from the anemone. In addition, the sea anemones are given better water circulation because the clownfish fan their fins while swimming about. The clownfish are the only fish that do not get stung by the tentacles of the sea anemone. Clownfish have a slimy mucus covering that protects them from the sea anemone. The clownfish and the sea anemone help each other survive in the ocean. A symbiotic relationship in which both species benefit is: