Life Beneath the Waves. 89 



the grasp of a large anemone, such as the 

 Dahlia for instance : it remains as motion- 

 less as if it were paralysed, or devoid of 

 life; and yet it is not really incapable of 

 motion, for if removed in good time from 

 the encircling tentacles with the aid of a 

 brush or pencil, it darts away with sur- 

 prising activity; and if there is any sand 

 provided for it in the aquarium, the 

 rescued shrimp immediately buries itself 

 with remarkable rapidity, considering its 

 late apparent incapability of movement. 



Numerous specimens of the creatures 

 commonly called Sea-plumes, or Plumed 

 Slugs, may be found amongst the rocks at 

 low water : the chief characteristic of these 

 Sea-slugs is, that their breathing organs or 

 gills are placed outside their bodies, spread 

 open after the manner of the anemone's 



