236 



BIOLOGY Of THE SEAS OF THE U.S.S.R, 



Fig. 101. Distribution of Microcalanus pyg- 

 maeus in the Kara Sea (Virketis). 



The first group of plankton organisms includes a large number of forms of 

 which the basic population of the Kara Sea is composed. Among them several 

 are widely distributed throughout the Arctic, while some are cosmopolitan 

 forms (Figs. 101, 102). This group includes many Tintinnoidea (Parafavella), 

 Siphonophora Diphyes arctica, the worm Sagitta elegans, many Copepoda 



Fig. 102. Distribution of some Atlantic- 

 Barents Sea forms in the Kara Sea (Virketis). 



