Before revision: Life in the Deep Sea Benthic Boundary Layer The benthic boundary layer (BBL) represents a few tens of meters of the water column directly above the sea floorJoan E. Cartes (1998) "Dynamics of the bathyal Benthic Boundary Layer in the northwestern Mediterranean: depth and temporal variations in macrofaunal–megafaunal communities and their possible connections within deep-sea trophic webs" Progress in Oceanography 41: 111-139 and constitutes an important zone of biological activity in the ocean.
After revision: Life in the Deep Sea Benthic Boundary Layer The benthic boundary layer (BBL) represents a few tens of meters of the water column directly above the sea floor and constitutes an important zone of biological activity in the ocean.