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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.
Approximately 97% of the park's area consists of sea, with more than 390 types of coral reefs decorating its seabed. The coral reefs in Bunaken are formed as part of the Indo-Pacific coral reef ecosystem, and are known as one of the highest marine biodiversity in the world. Coral Triangle: Mainly Indonesia
The Great Barrier Reef is the world's largest coral reef system, [1] [2] composed of over 2,900 individual reefs [3] and 900 islands stretching for over 2,300 kilometres (1,400 mi) over an area of approximately 344,400 square kilometres (133,000 sq mi).
Here's how warming affects coral reefs and what the future might hold for these fragile underwater ecosystems. Huge stretches of coral reef around the world are turning a ghostly white this year ...
Coral reefs are important ecosystems that sustain underwater life, pro. Coral reefs around the world are experiencing global bleaching for the fourth time, top reef scientists declared Monday, a ...
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]
Coral reefs are under stress around the world. [95] In particular, coral mining, agricultural and urban runoff , pollution (organic and inorganic), overfishing , blast fishing , disease, and the digging of canals and access into islands and bays are localized threats to coral ecosystems.
While it covers only 1.6% of the planet's oceanic area, the region has 76% of all known coral species in the world. As a habitat for 52% of Indo-Pacific reef fishes and 37% of the world's reef fishes, it contains the greatest diversity of coral reef fishes in the world [17] More than 3,000 species of bony fish are distributed over more than 90% of the Coral Triangle.