epifauna
Concise Oxford English Dictionary © 2008 Oxford University Press:
epifauna/ˈɛpɪfɔːnə/
▶noun Ecology animals living on the bed of a body of water or on other submerged surfaces. Compare with infauna.
– derivatives
epifaunal adjective.
epifaunal adjective.
'epifauna' also found in these Oxford entries:

