Life Beneath the Waves. 83 



horns, or feelers, will be seen amongst them; 

 they terminate in a sort of knob, and are 

 continually in motion, being elongated and 

 shortened according to the desire of their 

 owner. 



The movements of the Sea-urchin are 

 very slow, in spite of its having such a 

 large number of sucker feet, and being, 

 moreover, probably helped along by some 

 of its numerous spines. It seems to possess 

 a modest and retiring nature, for its chief 

 delight, when in an aquarium, appears to 

 be to cover itself with pebbles, which it- 

 picks up with its spines. At first I 

 imagined that the little stones had fallen 

 by mistake, and wishing to do all in my 

 power to render my captive happy, I re- 

 moved the pebbles with a brush, but the 

 Sea-urchin evidently did not appreciate my 

 would-be kindness, for, in a short space of 

 62 



