The temperature as well as nutrient conditions in the surface layer were mostly normal for the season in all areas. The positive effect of the earlier inflows through the Sound was not any longer to be seen in the eastern Gotland Basin. The concentration of hydrogen sulphide was high. Oxygen concentrations below 2 ml/l, were found at depths from 70-80 metres in the western Gotland Basin and in the southeastern Baltic, from 80 metres in the eastern Baltic and in the Bornholm Basin and from 90 metres in the northern Baltic. Hydrogen sulphide was found from 90 metres at the Karlsö Deep, from 125 metres in the eastern and northeastern Baltic and in the northern part of the Baltic from 150 metres.