160 Secrets of the Ocean [FOURTH WEEK 



contribute not a small share to the beauty of Fundy tide- 

 pools, swimming in iridescent waves through the water or 

 waving their Medusa-head of crimson tentacles at the 

 bottom among the sea-lettuce. These worms form tubes 

 of mud for themselves, and the rows of hooks on each side 

 of the body enable them to climb up and down in their 

 dismal homes. 



Much of the seaweed from deeper bottoms seems to be 

 covered with a dense fur, which under a hand lens resolves 

 into beautiful hydroids, near relatives of the anemones 



TEXTACLED WORM. 



and corals. Scientists have happily given these most 

 euphonious names Campanularia, Obelia, and Plumu- 

 laria. Among the branches of certain of these, numbers 

 of round discs or spheres are visible. These are young 

 medusae or jelly-fish, which grow like bunches of currants, 

 and later will break off and swim around at pleasure in 

 the water. Occasionally one is fortunate enough to dis- 

 cover these small jellies in a pool where they can be photo- 

 graphed as they pulsate back and forth. When these 

 attain their full size they lay eggs which sink to the bottom 



