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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
- 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
- Corals Tutorial: What are corals? - NOAAs National Ocean Service
This tutorial is an overview of the biology of and threats to coral reefs, as well as efforts being made to conserve and protect them It includes images, animations, and videos
- What is coral? - Great Barrier Reef Foundation
Corals are invertebrates that belong to a large group of animals called Cnidaria, which are characterised by their stinging tentacles These fascinating creatures are colonial organisms, which means many individual corals live and grow while connected to one another
- 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 is coral? - Institut océanographique
Corals are in fact small animals, called polyps, in the shape of sea minnows that can form colonies These polyps make a common skeleton which for some species become the foundation of a coral reef
- Coral - Description, Habitat, Image, Diet, and Interesting Facts
At its core, a coral is an invertebrate animal belonging to the phylum Cnidaria, which also includes jellyfish and sea anemones Each individual coral is a small, soft-bodied polyp, typically cylindrical in shape with a mouth surrounded by tentacles
- Coral Reef Alliance - Saving the World’s Coral Reefs
Millions of people and species of wildlife depend on coral reefs While climate change threatens their future, science shows that corals can adapt and survive if we keep them healthy
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