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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 from multiple symbiotic relationships with the organisms around them. [21] Coral reefs are being heavily affected by global ...
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]
Aerial view of Ningaloo Reef in Western Australia, the largest fringing coral reef in the world and a UNESCO World Heritage Site. Fringing reefs are located near shore in the tropics in many areas and are the most common reef type. Coral reefs are found in the tropics in which the water is between 18 and 30 °C (64 and 86 °F). [6]
A striped surgeonfish amongst the coral on Flynn Reef. There are at least 330 species of ascidians on the reef system with the diameter of 1–10 cm (0.4–4 in). Between 300 and 500 species of bryozoans live on the reef. [54] Four hundred coral species, both hard corals and soft corals inhabit the reef. [46]
Coral reefs are some of the most biodiverse habitats on earth, supporting large numbers of species of corals, fish, molluscs, worms, arthropods, starfish, sea urchins, other invertebrates and algae. Because of the photosynthetic requirements of the corals, they are found in shallow waters, and many of these fringe land masses. [ 24 ]
The Great Barrier Reef is showing signs of repair. The reef has been suffering from a large amount of ocean bleaching due to the rise in ocean temperatures. Unfortunately, the Great Barrier Reef ...
Other common species of hard coral found on the Florida Reef include Ivory Bush Coral (Oculina diffusa), which is the dominant coral in the patch reefs along the Florida coast north of the Florida Keys, staghorn coral (Acropora cervicornis), lettuce coral (Agaricia agaricites), grooved brain coral (Diploria labyrinthiformis), boulder star coral ...