epifauna

As an adjective benthic

is pertaining to the benthos; living on the seafloor, as opposed to floating in the ocean.

As a noun epifauna is

a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, eg animals living on top of the sediment at the seafloor.

As nouns the difference between epifauna and epiflora

is that epifauna is a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, e.g. animals living on top of the sediment at the seafloor while epiflora is epiphytic flora.

As a noun epifauna

is a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, e.g. animals living on top of the sediment at the seafloor.

As an adjective epibenthic is

that lives on the surface of sediments at the bottom of the sea.

is likely misspelled.

has no English definition.

As a noun epifauna

is a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, e.g. animals living on top of the sediment at the seafloor.

As a noun epifauna

is a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, e.g. animals living on top of the sediment at the seafloor.

As an adjective infaunal is

belonging to the infauna.

As nouns the difference between epifauna and meiofauna

is that epifauna is a fauna characterized by members whose typical life sites are on the outer surface of their environment, as opposed to within it, e.g. animals living on top of the sediment at the seafloor while meiofauna is a type of interstitial fauna, such as psammon, found in rock fissures, between the grains of loose sediments, on algae, etc. It is a part of the microfauna.