_:b1218122 . _:b1218122 . _:b1218122 "ISBN:044482619X"^^ . _:b1218122 . _:b1218122 "The bathypelagic zone biome comprises the marine water column below approximately 1000 m water depth - the maximum depth to which detectable daylight penetrates in all but the clearest oligotrophic waters - and extends to about 2500 - 2700 m water depth. In the temperate Atlantic, the beginning of the bathypelagic zone biome approximates to the deep oxygen minimum and the base of the permanent thermocline."^^ . _:b1218122 "PLB:plb"^^ .