epizoite
/ˌɛpɪˈzoʊaɪt/
noun
- An organism that lives on the surface of another animal, usually without causing harm.
- Scientists studied the epizoite living on the skin of a sea turtle.
- Some fish carry an epizoite that feeds on leftover food particles.
- The barnacle is a common epizoite that attaches to whales.