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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 ...
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]
Set off the coast of Sablayan, Apo Reef Natural Park spans 13 square miles (around 33 square kilometers), making it the world’s second-largest contiguous coral reef system after Australia’s ...
Lophelia reef (also known by its Wakashan name q̓áuc̓íwísuxv [1] [2]) is a coral reef that lies some 200 m underwater in Finlayson Channel in British Columbia, Canada. It is Canada's only known living coral reef, and the Pacific Ocean 's northernmost known coral reef.
The interaction rate (free diving) at the Coral Sea reefs ranged from a few to 26 sharks per hour. [55] The rare Etmopterus dislineatus shark species is endemic to the central part of the Coral Sea. It has been observed at depths of 590–700 m on or near the continental slope. [56]
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 from multiple symbiotic relationships with the organisms around them. [21] Coral reefs are being heavily affected by global ...
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