Estimates for the entire North Atlantic are that only 2% of biomass is produced at depths below 1,000 metres and only 1.2% occurs near the sea floor.
Odhady pre celý severný Atlantik hovoria, že len 2 percentá produkcie biomasy sa odohráva v hĺbkach pod 1 000 metrov a 1,2 percenta na dne mora.