Six bottom biocoenosis are the most abundunt in the Olenekskiy Bay of
the Laptev Sea. Benthos species of the southern part of the Olenekskiy
Bay are characteristic for the estuary-arctic water masses. The botto
m biocoenosis under study are characterized by a high settlement densi
ty (up to 2200 species per/m(2)) and a low biomass (44.0 g/m(2)). The
number of species increases with distance from shore and with depth.