Coral reefs Coral reefs A coral reef is a type of biotic reef that develops in tropical waters by reef-building, or hermatypic, corals. Coral reefs are formed of large amounts of calcium carbonate (limestone) that is deposited by corals and other organisms. Coral reefs come in a variety of forms, and provide a habitat for an amazing variety of organisms. ...more on Wikipedia about "Coral reef"
Kingman Reef is a one- square-kilometer tropical coral reef located in the North Pacific Ocean, roughly half way between Hawaiian Islands and American Samoa at . It is the northernmost of the Northern Line Islands and an unincorporated territory of the United States, part of the United States Minor Outlying Islands, administered from Washington, DC by the U.S. Navy. The reef is closed to the public. ...more on Wikipedia about "Kingman Reef"
The Mesoamerican Barrier Reef System stretches from the tip of the Yucatan Peninsula down to the Bay Islands of Honduras, this reef structure is the largest coral reef in the Western Hemisphere, the second largest coral reef in the world. ...more on Wikipedia about "Mesoamerican Barrier Reef System"
The New Caledonia Barrier Reef is located in New Caledonia in the South Pacific, and is the second-largest coral reef in the world, after Australia's Great Barrier Reef. ...more on Wikipedia about "New Caledonia Barrier Reef"
Ningaloo Reef is a coral reef located off the west coast of Australia, approximately 1200km north of Perth. The reef is 280km long. ...more on Wikipedia about "Ningaloo Reef"
The Pearl and Hermes Reefs ( Hawaiian: Holoikauaua), are part of the Northwestern Hawaiian Islands. Discovered in 1857, a few, small, sandy islands exist, contained within a lagoon, surrounded by a coral reef. They are devoid of vegetation, except for several species of grasses. The reefs were most noted within the pearl trade. In 1927, Captain William Greig Anderson was fishing for tuna and in the process, discovered pearl beds within the lagoon. This opened up the first commercial activity the reefs had ever seen, but the pearl trade lasted for only a few years. The Hawaiian government elected to suspend activity and render the area as a bird sanctuary, which it remains today. ...more on Wikipedia about "Pearl and Hermes Reef"
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