Benthic epifauna live upon the seafloor or upon bottom objects; the so-called infauna live within the sediments of the seafloor.

Where are Infauna found?

Infaunal Benthic Invertebrate Organisms

"Benthic" refers to anything occurring at or in the bottom of a body of water. "Infauna" are the creatures tht live in the sediments.

Where do we find benthic organisms?

Benthos or benthic organisms live on the ocean floor, either on the substrate (epifauna and epiflora) or inside it, buried or burrowing in the sediment (infauna). Benthic organisms may be sessile, attached to a firm surface such as rocks and manmade structures, or mobile, moving freely on or in the bottom sediment.