HURLEY: SCHOOL STRUCTURE OF LOLIGO OPALESCENS 



30 



A 



20 . 



2 10 



V 





/ V" 



.' S-. 



\/\ 





\y 



\/ 



30 . 



20 



10 - 



^/\/\ A.; WW n 





10 



~T — 



20 



30 

 MINUTES 



~T — 



40 



— I- 



50 



60 



•a 



MINUTES 



Figure 2. — Values of mean separation distance and mean angular deviation for two (Groups 3 and 7) of the 

 experiments presented in Table 1. Mean size ofLoligo opalescens in the experiment represented in A and C was 7.7 cm 

 mantle length. Mean size of squid in the experiment represented in B and D was 11.9 cm mantle length. 



437 



