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A NATURAL HISTORY OF THE SEAS 



the fins are fused to form cup-like suckers, and a similar 

 sucking disc is distinguishable in the large Lump-suckers 

 (Cyclopterus). By means of this disc a Lump-sucker may- 

 adhere to objects with such power that a pull of many 



Dragon Fish 



pounds is required to remove it from the object to which 

 it is attached. 



In the Sharks and Rays the hinder part of the pelvic 

 fins in the male are transformed to form unique organs 

 known as " claspers," which serve to retain a hold on the 

 female. 



