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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]
Reef sites and lagoons within Choiseul Province including Zinoa Island that is located on the south-west side of Choiseul Island and includes the Zinoa Marine Conservation Area, which covers 150 ha or 1.5 km 2 (0.58 sq mi) and consists of two small islands and associated reefs; Rabakel is a marine protected area (MPA), measuring 0.22 km 2 (0. ...
On Thursday, as a National Geographic expedition was exploring the waters around the Solomon Islands, its members spotted something that looked like a shipwreck underwater. “Just when we think ...
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
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 ...