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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. National Geographic Video - Wikipedia

    en.wikipedia.org/wiki/National_Geographic_Video

    National Geographic Special 15321 Fiji: Coral Reef 1988 ... National Geographic Kids Video ... Free Games Educational Video Presentations

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

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

    An aerial view of the world’s largest coral, under the stern of a research boat, discovered in the Solomon Islands last month. - Steve Spence/National Geographic Pristine Seas

  5. Built for the Kill - Wikipedia

    en.wikipedia.org/wiki/Built_For_The_Kill

    Built for the Kill ' s classic opening was a montage of creatures featured in the first 7 episodes (Desert, Coral Reef, Rainforest, Grassland, Miniature, Swamp and Ocean) with a catchy theme song. This opening was changed further into the series to one that shows the National Geographic logo in various parts. The theme song stayed the same however.

  6. List of reefs - Wikipedia

    en.wikipedia.org/wiki/List_of_reefs

    The Amazon Reef (also referred to as the Amazonian Reef) is an extensive coral and sponge reef system, located off the coast of French Guiana and northern Brazil. It is one of the largest reef systems in the world known to exist, with scientists estimating its length to be over 600 miles (970 km) long, and covering over 3,600 square miles ...

  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]

  8. Anthozoa - Wikipedia

    en.wikipedia.org/wiki/Anthozoa

    Coral reefs are some of the most biodiverse habitats on earth, supporting large numbers of species of corals, fish, molluscs, worms, arthropods, starfish, sea urchins, other invertebrates and algae. Because of the photosynthetic requirements of the corals, they are found in shallow waters, and many of these fringe land masses. [ 24 ]

  9. Weird but True! - Wikipedia

    en.wikipedia.org/wiki/Weird_but_True!

    Using crafting with paper products, [3] the Engelman siblings explore "weird but true" things about a broad-range of subjects, mostly focusing on science. They interview experts and travel to locations such as crime labs, amusement parks, and the Everglades to find answers to their questions and discover weird but true facts, often having their experts share their favorite one.