Euphausia superba and E. crystallorophias were the dominant species in the area studied, Thysanoessa macrura, E. jrigida and E. triacantha were also present. The abundance of krill was changing during the year; minimum occurred between March and August and maxima between December and February and from September till November. Age structure of three most frequently occurring species showed seasonal variations. The periods of development and Reproduction were different for T. macrura, E. erystallorophias and E. superba.

A map was made of the distribution of macroalgae groupings in shallow waters of Admiralty Bay. The map was plotted on the basis of analysis of color reversal air photograph taken from a helicopter. A significant agreement of the results of the pictures analysis with the field studies was found. Also a number of areas not covered by field studies was determined as the ones of probable occurrence of macroalgae. A detailed map of distribution of four distinguished forms of macroalgae groupings was plotted for a small area in the region of Shag Point. Each of these forms is characterised by different association of algal species.

Changes in water and ash contents in the body and calorific values of dry and wet body weight during nestling development of Pygoscelis antarctica and P. papus. were examinted. It was found that water content in the tissues of both species decreases from 85% to less than 65% whereas the content of mineral substances in dry body weight increases from 9<Vo to about 12%, at the time. Caloricity indices are high and increase during the development of nestlings. A particularly intense increase (from 0.8 kcal x g-1 to 2.2 kcal x g-1 ) characterizes calorific value of 1 gram of biomass.