cl asses : grazers 

 Stronqyl ocentrotus 

 largely eating gra 

 Bucci num , and the 

 gram we had some d 

 analyzed mussels, 

 by some mechanism 

 than do the grazer 

 poses in undertaki 

 this question and 

 area of sporadic h 

 uranic nuclide was 

 might systematical 

 concern. Comparis 

 and with analyses 

 leads us to the fo 

 1. Stronqyl oc entro 



like Myti 1 us : Thes 

 d S p i s 



, Bal anu 

 z e r s : T 

 Eider D u 

 ata, fro 

 s u g g e s t i 

 exhibit 

 s on w h i 

 ng the p 

 especi a I 



i g h e r c o 

 t e s , t i s 

 1 y rise 

 on among 

 reported 

 1 1 owing 

 tus and 



s , an 

 Fese 

 ck. 

 m ana 

 ng th 

 h i g h e 

 ch th 

 resen 

 ly to 

 n t a m i 

 sue c 

 to le 

 the 

 by L 

 concl 

 Litto 



are H£ 

 At the 

 lysis 

 at i nv 

 r acti 

 ey fee 

 t proj 

 estab 



nation 

 oncent 

 vel s h 

 data p 

 i V i n g s 

 u s i n s 

 r i n a f 



e are Li ttorina , 

 ula ; or 



marus , 



pred 

 Lunat 



start 

 of star 

 ertebra 

 n i d e c c 

 d. One 

 ect was 

 1 i s h w h 



of gra 

 rations 

 i g h e n 

 i n t s r 

 ton and 



2, 



3, 



from site 3, pr 

 radi onucl ides . 

 Spi sul a from si 

 concentr a t i o n e 

 Neither lobster 

 t rat ions of 137 

 than, or even a 

 B u c c i n u m and L, 

 observations on 

 times higher th 

 from comparison 

 2, or reported 

 concentrations 



an area that so 

 stream. 



rom sit 



obably show no evidence of 



ators , 

 ia . 



of this pro- 

 f i s h eating 

 te predators 

 ncentrations 

 of our pur- 

 to explore 

 ether in an 



zers with trans- 



in predators 

 ugh to cause 

 eported here, 

 Bowen (1976), 



e 2 , and Bal anus 

 Pilgrim 1 waste 



te 8 exh 

 xpected 



nor e i d 

 Cs or Pu 

 s high a 

 u n a t i a p 



s t a r f i s 

 an in t h 



of site 

 by L i V i n 

 escal ate 

 metimes 



ibits probably about double the Pu 

 from fallout alone. 



er-duck show evidence of concen- 

 in their tissues that are higher 



s, those inferred for their prey. 



robably agree with our earlier 



h in showing tissue Pu two to three 



eir prey, but there is no evidence 

 3 data with that either from site 



gston and Bowen (1976), that these 

 systematically in organisms from 



receives the reactor coolant 



40 



