200 



TUE BOTTOM OF THE SEA. 



seems to grow out of the rock as a tree out of llie 

 ground, aiid from wliicli the branches proceed in all 

 possible directions. At the extremities of the 



Fig. 40.— Dendiopl.yllia (lialf the natu.nl size). 



brandies are the cuplike hollows in which the 

 ]>olypi live. 



