Surface nutrient concentrations were normal in all areas. The oxygen concentration in the deep water of the southern Kattegat and in the Sound was slightly lower than normal. In the western and eastern Gotland Basins oxygen concentrations below 2 ml/l were found at depth exceeding 70-80 meters. Hydrogen sulphide was found in the western Gotland Basin from 80-90 meters, while in the eastern Gotland Basin from 135 meters. A bloom of the coccolithophoride algae Emiliania huxleyi was observed in the Skagerrak.