302 



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

 Table 125 



Depth, m 



Red algae Brown algae Green algae Blue-green algae 



0-2 



2-4 



4-8 



8-12 



12-18 



18-25 



Fig. 144a. Penetration of some marine and brackish-water plants far into the Baltic 



Sea (Sagerstrale). 



