ECOLOGY AND BIOLOGY OF THE PACIFIC WALRUS 



51 



epidermis 



dermis' 



h a i r s 



1 mm 



R 



0.1 mm 



Fig. 33. Longitudinal sections of skin from Pacific walruses, showing (upper) inter- 

 digitation of tissues at the dermo-epidermal junction. The five cell layers of the epidermis 

 (lower) are indicated as C = corneum, L = lucidum, G = granulosum. S = spinosum. and 

 R = germinativum. (Photos by S. M. Coulthard and F. H. Fay) 



