10. A simple kind of sea pen, VcrctiUum cynomorium, 

 with fullv expanded polyps arising from its fleshy 

 bodv. To its right is a white sea squirt, Phalliisia 

 vKimilhita. (Banvuls, France. Ralph Bnchsbaum) 



11 and 12. A common sea fan of European waters, 

 Eunicclla vcnucom, still attached to a small boulder, 

 is shown just after being dredged from the sea bottom 

 off Plymouth, England. (Ralph Buchsbaum.) Below, 

 the enlarged portion shows the manv polyps, each 

 with eight feathery tentacles. (D. P. Wilson) 



13. The aggregated anemone, Anthoplcuia clegantissima, is the commonest anemone 

 of the American Pacific co;ist. About o inches across when fully expanded, it lives in 

 dense beds, often attached to rock in sand. (W'oodv Williams) 



