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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 ...
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 ...
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]
Pulley Ridge is a mesophotic coral reef system off the shores of the continental United States. [1] The reef rests on sunken barrier islands [2] and lies 100 miles west of the Tortugas Ecological Reserve and stretches north about 60 miles at depths ranging from 60 to 80 meters. [3]
The Cozumel reef system is part of the Mesoamerican Barrier Reef System, the second largest coral reef system in the world. [ 3 ] [ 4 ] Even though almost the entire island of Cozumel is surrounded by coral reefs , the park only encompasses the reefs on the south side of the island.
Coral reef at Nusa Lembongan, Bali, Indonesia Pamalican island with surrounding reef, Sulu Sea, Philippines A reef surrounding an islet Reefs off Vanatinai Island in the Louisiade Archipelago. A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. [1]
The Rost Reef (Norwegian: Røstrevet) is a deep-water coral reef off the coast of the Lofoten islands in Nordland county, Norway. The reef was discovered in 2002, about 100 kilometres (62 mi) west of the island of Røstlandet. It extends over a length of about 43 kilometers (27 mi), and has a width of up to 6.9 kilometers (4.3 mi). [1]