Introduction.- Dispersed sedimentary substance of the atmosphere.- The geochemical features of the river discharge to the White Sea.- The river-sea mixing zone (Marginal Filter of the Severnaya Dvina River.- Hydrochemistry and the production- destruction processes in the White Sea.- Organic substance of the White Sea.- Trace elements in water and suspended matter in the White Sea.- Phytoplankton in the White Sea.- Zooplankton: structure, dynamics and ecology of the communities.- Trace elements in plankton organisms in the White Sea.- Oil components in water and suspended matter in the White Sea.- Conclusions.