Definition of epifauna in English:

epifauna

noun

Ecology
  • [mass noun] Animals living on the surface of the seabed or a riverbed, or attached to submerged objects or aquatic animals or plants.

    Compare with infauna
    • ‘Episodically, stronger storm currents could dislodge rocks with attached algae, mussels, and other epifauna, exposing them to transport ashore by storm waves.’
    • ‘Analyses were also performed by splitting the epifauna into mobile, nonmobile, and attached organisms, but these analyses were not included here because the results are not substantially different from those presented here.’
    • ‘Although such ammonites are known in the English Jurassic, it clearly does not apply to these Lower Lias ammonites from Dorset which are largely devoid of epifauna.’
    • ‘The group was the principal epifauna of the Paleozoic.’
    • ‘Even if an intertidal zone existed, sea ice disturbance, as well as the unstable, gravelly substrate, would make it uninhabitable by intertidal benthos, epifauna, or epiphytes.’

Pronunciation:

epifauna

/ˈɛpɪfɔːnə/