PECULIARITIES OF THE SEA ANEMONES. 715 



it entered. The opening into their stomach is capable of great 

 extension, so that they can swallow a shell quite as large as 

 they are themselves. Though they generally pass their lives 

 in a stationary position, yet they have the power to detach 

 themselves, and move away, though very slowly, to a new posi- 

 tion. It is said that when they move thus, they do it by re- 

 versing themselves, and using their tentacles as feet. Though 

 they have no visible eyes, yet they appear to be sensible to light, 

 and will draw in their tentacles, if exposed to a too bright light, 

 not opening them again until the light is removed. 



K.SD COEAL. 



