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  2. 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 ...

  3. Nancy Knowlton - Wikipedia

    en.wikipedia.org/wiki/Nancy_Knowlton

    She also serves as one of three co-chairs for the coral reef Census of Marine Life. She is the author of the book Citizens of the Sea which was published by National Geographic in 2010 [4] to celebrate the end of the Census of Marine Life. In 2011, Knowlton received the 17th Annual Heinz Award with special focus on the environment. [5]

  4. National Geographic Video - Wikipedia

    en.wikipedia.org/wiki/National_Geographic_Video

    National Geographic Special 15321 Fiji: Coral Reef 1988 1989 60 ... National Geographic Kids Video ... Parachute Games

  5. World’s largest coral discovered off the Solomon Islands

    www.aol.com/news/world-largest-coral-reef...

    On Thursday, as a National Geographic expedition was exploring the waters around the Solomon Islands, its members spotted something that looked like a shipwreck underwater. “Just when we think ...

  6. Scientists discover the world’s largest coral — so big it can ...

    www.aol.com/news/scientists-discover-world...

    The mega coral was spotted during a scientific expedition launched by the National Geographic Pristine Seas program in October to study ocean health in the Solomon Islands.

  7. Marine ecosystem - Wikipedia

    en.wikipedia.org/wiki/Marine_ecosystem

    Coral reefs are one of the most well-known marine ecosystems in the world, with the largest being the Great Barrier Reef. These reefs are composed of large coral colonies of a variety of species living together. The corals form multiple symbiotic relationships with the organisms around them. [7]

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