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  2. Black coral - Wikipedia

    en.wikipedia.org/wiki/Black_coral

    For example, Cozumel, Mexico, was famed for dense black coral beds that have been harvested since the 1960s [30] leading to widespread black coral population declines. [31] Despite improvements in management in Cozumel, including no harvesting permits issued since the mid-1990s, the black coral population had failed to recover when assessed in ...

  3. Favosites - Wikipedia

    en.wikipedia.org/wiki/Favosites

    Favosites is an extinct genus of tabulate coral characterized by polygonal closely packed corallites (giving it the common name "honeycomb coral"). [1] The walls between corallites are pierced by pores known as mural pores which allowed transfer of nutrients between polyps.

  4. Coral reef - Wikipedia

    en.wikipedia.org/wiki/Coral_reef

    A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. [1] Most coral reefs are built from stony corals, whose polyps cluster in groups. Coral belongs to the class Anthozoa in the animal phylum Cnidaria, which includes sea anemones and ...

  5. Tabulata - Wikipedia

    en.wikipedia.org/wiki/Tabulata

    Tabulata, commonly known as tabulate corals, are an order of extinct forms of coral. They are almost always colonial, forming colonies of individual hexagonal cells known as corallites defined by a skeleton of calcite, similar in appearance to a honeycomb. Adjacent cells are joined by small pores.

  6. Hexagonaria - Wikipedia

    en.wikipedia.org/wiki/Hexagonaria

    Hexagonaria is a genus of colonial rugose coral. Fossils are found in rock formations dating to the Devonian period, about 350 million years ago. Specimens of Hexagonaria can be found in most of the rock formations of the Traverse Group in Michigan. Fossils of this genus form Petoskey stones, the state stone of Michigan. [1]

  7. Corallite - Wikipedia

    en.wikipedia.org/wiki/Corallite

    Diagram showing a coral polyp, its corallite, coenosarc and coenosteum Up : zoom on the skeletal cup of an Astrangia coral; Down : view of the skeleton of the whole colony, showing all the coralittes. A corallite is the skeletal cup, formed by an individual stony coral polyp, in which the polyp sits and into which it

  8. Acroporidae - Wikipedia

    en.wikipedia.org/wiki/Acroporidae

    Acroporidae is a family of small polyped stony corals in the phylum Cnidaria.The name is derived from the Greek "akron" meaning "summit" and refers to the presence of a corallite at the tip of each branch of coral. [3]

  9. Pavona (coral) - Wikipedia

    en.wikipedia.org/wiki/Pavona_(coral)

    Members of the genus are distinguished from other corals by having no walls to the corallites, but having clearly delineated septocostae that connect each corallite to its neighbours, giving a flower-like pattern on the surface of the coral. The corallites themselves are shallow depressions with central columella and may be separated by ridges.