There was an enlarged sampling in the south-eastern Kattegat to examine the oxygen of the bottom water. The water near the bottom in Laholmsbukten and Skälderviken had an oxygen content of 0.10 and 0.38 ml/l respectively. In the Sound there was less than 2 ml/l from 15 meters and deeper at W Landskrona. Surface temperatures varied between 13.4 and 15.1°C. Nutrient concentrations were normal for the season. Hydrogen sulphide was present in the bottom water in the Bornholm Basin, Hanö Bight and the eastern and western Gotland Basins. Some of these results indicate that the oxygen situation is worse than normally for the season.