THE INVERTEBRATE LEGIONS 



101 



Fig. 30. Top. Sea fans, Gorgonia, over a foot in diameter, often anchor to feden- 

 cidate coral in fairly calm water. Several small corals may he seen to the left, includ- 

 ing a hliie coral Qtof left^. Bottom. Eusmilia is one of the most heautiful corals. The 

 colony is not large, hut each coral polyp is of good size, up to three-fourths of an inch 

 in diameter. 



