82 Life Beneath the Waves. 



appearance is, at first sight, very dissimilar 

 to that of the Starfish tribe, but who is, 

 nevertheless, closely related to them. I am 

 speaking of the Echinus, or Sea-urchin, the 

 dead shell of which may frequently be 

 found on the seashore, and is, doubtless, 

 sufficiently familiar to iny readers, al- 

 though a living specimen is seldom washed 

 up by the waves. Like the Starfish, the 

 Sea-urchin is provided with hundreds of 

 sucker feet, capable of being pushed forth 

 and drawn back at pleasure; the position 

 of its mouth is also the same as that of the 

 Star, being in the centre of the under part 

 of its shell, or body, and a terribly large 

 mouth it is, with its five protruding teeth, 

 so particularly hard and sharp. 



When alive, the shell of the Sea-urchin is 

 covered with sharp spines, and upon close 

 examination, a number of transparent 



