CORALS. 



127 



Protozoa, the very lowest form in which animal life can 

 definitely be said to exist. But the Coral animal belongs 

 to a more highly organised group, the simplest of which 



is called Madrephylle, and the most complex are popu- 

 larly known as Sea Anemones. 



Scientifically they are called " Anthozoa," i.e. Living- 



