532 



ECOLOGY AND BEHAVIOR 



Figure 2 Resting sites for H. portusjacksoni and depth contours on shallow reef at 

 Bondi, Sydney. 



30 



20- 



nos. 



on 



reef 



10- 









• • 



• • 



ol 



• a •• • 





. . .. . . . ' . *!'* • , .  f *' /    % ' 



MJJASOND I 



J "fmaM j 



1962 



V f 



-I 



1963 



1964 



Figure 3 Seasonal changes in the number of H. portusjacksoni on the reef 

 at Bondi. 



