Summary
At visited stations in Kattegatt, Skagerrak and the Sound nutrient concentrations showed normal values for the season. Lower silicate concentrations was found in western and north western Baltic proper. Lower oxygen values compared to normal were found in the bottom water of the Sound. Values below 2 ml/l were found at all stations in western, eastern and northern Baltic Proper with bottom depth greater than 80 to 90 metres. Hydrogen sulphide was found from 125 metres and deeper in eastern Baltic Proper and from 90 metres and deeper in western Baltic Proper.