MACROORGANISMS 



The principal macroorganisms present in both opera- 

 tions were nauplii (larvae), copepods, and polychaete worm 

 larvae. Generally, nauplii were most numerous, with 

 copepods and polychaetes following in that order. Figures 

 illustrating the distributions of these organisms in time 

 and space are found in the appendix. Cladocerans, chaeto- 

 gnaths, bivalve larvae, and rotifers were also present in low 

 numbers, but were not plotted. The lack of correlation be- 

 tween macroorganisms and light attenuation cited previously 

 is treated in DISCUSSION. The nature and size of character- 

 istic plankton types are shown in figure 7. 



t, A ^ ® * 



<v r' 9 9 ^\a 



\ 



^ » ® * .f o » T» •« * 



« 





V' 





9^ 





• $ e e « O > 



e 



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Figure 7. Typical planktonic organisms. A. Gonyaulax polyedra, B. Immature copepods, 

 C. Tintinnids (a testiculate protozoan), D. Ceratium species, E. Naked dinoflagellate. 



17 



