infaunal


in·fau·na

I0126700 (ĭn′fô′nə)n. Aquatic animals, such as clams or burrowing worms, that live beneath the surface of a sea or lake floor.
[in- + fauna.]
in′fau′nal adj.

infaunal

(ɪnˈfɔːnəl) adj (Zoology) zoology of or relating to infauna