SEA-ANEMONES. 



243 



red color, and gets its name from the fact that the 

 tubes of the coral somewhat resemble the pipes of an 

 organ. 



SEA-ANEMONES, OB ACTINAKIANS. 



These polyps are wholly soft, only a few secreting 

 from the base a horn-like substance. They are com- 

 mon on nearly all coasts, and vary from a quarter of 



Fig. 495. Same as Fig. 498. 

 Closed. 



Fig. 496. Same as Fig. 498. 

 Just opening. 



g. 497. Sea- Anemone. 

 Bunodes. 



Fig. 498. Sea-Anemone, or Fringed 

 Actinia. 



an inch to a foot or more in diameter, as seen in some 

 of the tropical species. Our species seldom exceed two 



