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.

The article is based on a thorough reading of one of the latest anthropological contributions to the study of demographic behavior and a demographic change. Reviewing the essays contained in the book is a springboard for exploration of the nature of a presumed "epistemological crisis" within demography and the possible refreshment of the discipline that might have come from anthropological theories and methodologies. By doing so, the examples of anthropological reformulations of the fundamental demographic concepts, presumptions and methods are presented, and the benefits and pitfalls of the liaison between anthropology and demography are discussed.