Measurements of water temperature and salinity were carried out at 38 oceanographic stations at Admiralty Bay in the period between December 1978 and February 1979. The temperature at the water surface ranged from 0.18°C to 2.81 °C and salinity from 16.40 to 34.16‰. Deeper water temperature decreased and salinity increased ranging at the bottom, at the depth of 480 m, from —0.23°C to 26°C and from 34.51‰ to 34.57‰, respectively. The investigations at the shore and offshore stations showed a marked effect of the run-offs from glaciers causing a considerable decrease in salinity of the thin surface layer of the waters. The main area of the Bay is characterized by high uniformity of water temperature and salinity, which proves that these waters are well mixed.