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- 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 are corals? - NOAAs National Ocean Service
Coral reefs are some of the most diverse ecosystems in the world Thousands of species rely on reefs for survival Millions of people all over the world also depend on coral reefs for food, protection and jobs 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
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