What are Corals? Animal Types, Polyps and Coral Bleaching
What are Corals? Corals are animals or marine invertebrates of the phylum Cnidaria within the class Anthozoa. They are the important reef builders that secrete limestone (calcium carbonate) to form a hard skeleton and inhabit tropical oceans. Corals form compact colonies of genetically identical sac-like animals called polyps. Almost all corals are …