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  • Coral - Wikipedia
    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 important reef builders that inhabit tropical oceans and secrete calcium carbonate to form a hard skeleton
  • Corals Tutorial: What are corals? - NOAAs National Ocean Service
    When we think about corals, it brings to mind clear, warm tropical seas and reefs filled with colorful fish In fact, hard, or stony corals — the kind that build reefs — are only one type of coral
  • 25 Different Types of Coral Species - Aquarium Whisperer
    From the shallow reefs to the deep ocean floors, corals are not just beautiful marine ornaments; they are vital to the health of our oceans In this article, we will introduce you to 25 fascinating coral species, complete with pictures, to help you understand their unique characteristics, habitats, and roles in the marine environment 1
  • Coral | Definition, Types, Location, Facts | Britannica
    Coral, any of a variety of invertebrate marine organisms of the class Anthozoa that are characterized by skeletons—external or internal—of a stonelike, horny, or leathery consistency The term coral is also applied to the skeletons of those animals, particularly to those of the stonelike corals
  • What is a Coral Reef? - NASA
    Corals are animals from the phylum Cnidaria, typically found along tropical coastlines They comprise hundreds to thousands of living organisms called polyps, each only a few millimeters in diameter
  • Corals - National Geographic Society
    Corals are small marine animals The “hard” type of coral grows with the help of algae, which gives it color and nutrients that help it form a sturdy, stony skeleton Reefs, which form through the accumulation of hard coral, are a vital ecosystem, supporting an estimated 25 percent of ocean species
  • What are corals? - ICRI
    Corals are invertebrate animals belonging to a large group of colourful and fascinating animals called Cnidaria Other animals in this group that you may have seen in rock pools or on the beach include jelly fish and sea anemones





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