Scleractinia
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Scleractinia, also called stony corals or hard corals, are marine animals in the phylum Cnidaria that build themselves a hard skeleton. The individual animals are known as polyps and have a cylindrica
Haeckel Hexacoralla
Diagram showing a coral polyp, its corallite, coenosarc and coenosteum
Diploria labyrinthiformis, a brain coral
Meandering corallite walls of an intratentacular budding coral
Coral
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Corals are colonial marine invertebrates within the subphylum Anthozoa of the phylum Cnidaria. They typically form compact colonies of many identical individual polyps. Coral species include the impor
Scleractinia
…colony of clones with a common skeleton, which may be up to several metres in diameter or height according to species. The shape and appearance of each coral colony depends not only on the species, but also on its location, depth, the amount of water movement and other factors. Many shallow-water corals…
Brain coral spawning
Montastraea cavernosa polyps with tentacles extended