THE SPERM WHALE 



127 



Total Length in metres 

 Fig. 33. Sperm whale. Females. Thickness of blubber and total length. 



Oct Nov Dec Jan Feb Mar Apr MaL| Jun Jul Aug 

 Fig. 34. Sperm whale. Males. Blubber thickness expressed as percentage of total length, by months. 



1-0 



0-0 



OG- 



\verage 



Lactdling" Resting 



Pregnant 



Jun Jul Aug Sep 



Fig. 35. Sperm whale. Females. Blubber thickness expressed as percentage of total length, by months. 



5-2 



