The effects of the major Baltic inflow that reached the Baltic Sea in December 2014 are now reaching the mouth of the Gulf of Finland. However, the effects of the inflow have subsided, and it cannot completely oxygenate the hydrogen sulphide-rich water mass in the deep basins of the Baltic Proper. In the open sea area of the Gulf of Finland, the oxygen situation of deep water is better than last year. In contrast, the algae levels in both the Gulf of Finland and the Finnish Archipelago Sea were higher than they were in August 2014....