48 SEA-SHORE LIFE 
tentacles. Its nearest relatives are slender little sea anemones with 
eight longitudinal furrows on the body and sixteen tentacles. 
They live in rocky tide-pools. 
The Cake-Anemone, (Stoichactis helianthus, Fig. 25), is com- 
mon in the West Indies and Bermudas, where it lives in shallow 
water under rocks or in crevices. It resembles a “‘ pancake ” from 

Fig. 23; CAKE-ANEMONE, Tortugas, Florida. 
three to five inches in diameter, the oval mouth being in the centre, 
and numerous short blunt tentacles covering the upper surface. 
This anemone adheres to rocks by means of its sucker-like base, 
but it can slowly move from place to place. It is usually olive- 
yellow, often mottled with green or olive-brown. 
