488 



Fishery Bulletin 100(3) 



100 

 80 

 60 

 40 

 20 

 



70 



60 



t 50 



^ 40 



OJ 



= 30 



0) 



iT 20 



10 







Hake 



>. 60 •■ 



20 







Grenadier 



1 



1 



False 

 Jacopever 



100 

 80 



c 



20 

 



Dragonet 



3 4 5 



Behavior 



Kingklip 



J 



lU 



L 



12 3 4 5 6 



Behavior 



Figure 7 



Histograms showing the frequency (as percent) at which behavior patterns 1-6 were 

 observed (x-axis) in species videotaped during survey dives between 100-140 m in the 

 Orange River delta area, southern Africa. All data were pooled. Behavior patterns: 1 = 

 hovering off the substratum; 2 = positioned on the substratum; 3 = swimming in the water 

 column; 4 = positioned in a crevice or under an overhang; 5 = occupying a shelter hole; 

 6 = buried (fully or partiallyt in the substratum. Solid bars indicate behaviors over soft 

 substrata, stippled bars indicate behaviors over hard substrata. 



also commented on some discrepancies in the structure of 

 the physical and biological environment in regions to the 

 north and south of the Orange River, which can be partly 

 explained by the latitudinal influence of the River and by 

 biogeography (Emanuel et al., 1992; Gibbons and Hutch- 

 ings, 1996). 



Acknowledgments 



We are very grateful to James Felley (Office of Informa- 

 tion Technology, Smithsonian Institution, Washington DC) 

 for his assistance with some of the statistical analyses of 

 the data, and for his comments on an earlier draft of the 

 manuscript. We would like to thank the three anonymous 



referees for their valuable comments, which served to 

 focus the text. The staff at the drawing office of De Beers 

 Marine (Pty.) Ltd. are thanked for their patient delivery of 

 maps, images, and yet more maps, and for putting up with 

 the persistent glare of the television screen. We would like 

 to thank Hans Fricke, Jurgen Schauer, and Karen Hiss- 

 man for their safe delivery of personnel (and videotapes) 

 from the bottom of the sea: rarely have we felt in such 

 capable hands. We are also grateful to the personnel of the 

 MV Zealous for their hospitality at sea, and to the helicop- 

 ter pilots for ensuring speedy transport from ship to shore. 

 De Beers Marine (Pty.) Ltd. are gratefully acknowledged 

 for their financial support of the project and for being 

 prepared to allow us to publish the data contained in our 

 article. 



