CLASSIFICATION OF MEANDRINA OR BRAIN CORAL
KINGDOM :- ANIMALIA ( Multicellular eukaryotic organisms)
PHYLUM :- COELENTRATA OR CNIDARIA (Tissue grade, diploblastic and acoelomate. )
CLASS :- ANTHOZOA OR ACTINOZOA (Only polypoid generation. sedentary, solitary, colonial.)
SUB-CLASS :- HEXACORALLIA (Tentacles and mesenteries in multiple of five or six.)
ORDER :- MADREPORARIA (Stony corals with compact calcareous exoskeleton.)
FAMILY :- MEANDRINIDAE (Colonial corals )
GENUS :- Meandrina
It is found in West Indies and Florida
HABIT AND HABITAT
Meandrina forms incrusting massive, gigantic colony consisting of round masses of limestone measuring approximately 25 meters in diameter and weighing several tons in sea.
GENERAL CHARACTERSTICS OF MEANDRINA OR BRAIN CORAL
- Meandrina or Meandra is called as brain coral.
- The long, curved grooves running parallel with each other resemble convolutions of human brain and hence the name brain coral.
- Each mass if formed as a result of accumulation of several generations of polyp.
- Surface of the colony is made up of numerous sinous ridges which are the septa and grooves.
- During living condition, the polyps remain confluent, mingled and closely set called as confluent corallites.
- Polyps do not occupy separate cups but several of them become mixed, having a common fringe of tentacles and rows of septa and mesenteries.
- Mouth of mixed polyps remain separate.
- Confluent polyps contract in day time, while they remain extended at night.
The animal contains ridges and grooves like mammalian brain and all above characters and hence it is Meandrina.