V. Zatzepin (1939) compared the consecutive changes of the total biomass 

 of the epi- and in-fauna of the depths for a stretch of the Kola Inlet 50 km long 

 and 1£ to 4| km wide. On the two submarine bars of the outer part of the 

 Inlet the epifauna is fed on the dying plankton and the organic detritus, and 

 is developed abundantly. In the hollow between the bars the infauna is pre- 

 ponderant, mainly detritus-eaters, living on detritus settled on the floor. 

 Farther into the Inlet the infauna increases as well as the epifauna because of 

 the presence of partly suspended detritus brought out by the rivers. 



Changes in the individual groups of the bottom population from north to 

 south are given in Table 53. The benthos of the cliff and rocky floor of the 

 sublittoral of the northern part of the Kola Inlet is different in its character. 



Table 54 



Epifauna is preponderant and the total biomass is much higher. Several most 

 typical communities may be distinguished there (Fig. 49a and в). 



First of all there is the Porifera-Brachiopoda-Bryozoa community very 

 similar to the one so widely distributed in the open southwestern parts of the 

 Barents Sea shores and with the same main organisms (see below). 



In separate patches among the above community, and often on more 

 shallow sites, the peculiar communities of the Salpa Ascidia obliqua (50 to 



