Coral reef - Wikipedia
WEBA 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 - National Geographic Society
WEBJul 18, 2024 · Reefs provide a large fraction of Earth’s biodiversity —they have been called “the rainforests of the seas.” Scientists estimate that 25 percent of all marine species live in and around coral reefs, making them one of the most diverse habitats in the world.
Coral reef | Description, Geochemistry, Origins, & Threats
WEB2 days ago · Coral reef, ridge or hummock formed in shallow ocean areas by algae and the calcareous skeletons of coral polyps and other coelenterates. A coral reef may grow into a permanent coral island. Often called ‘rainforests of the sea,’ coral reefs are home to a spectacular variety of organisms.
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WEBMay 20, 2024 · Teeming with life, coral reefs occupy less than one percent of the ocean floor but sustain 25 percent of marine species. These hubs of biodiversity now face existential threats, from ocean...
17,913 Underwater Coral Reef Landscape - Getty Images
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Coral reef ecosystems - National Oceanic and Atmospheric Administration
WEBFeb 1, 2019 · Coral reefs are some of the most diverse ecosystems in the world. Coral polyps, the animals primarily responsible for building reefs, can take many forms: large reef building colonies, graceful flowing fans, and even small, solitary organisms.
Coral Reef Biome: Location, Precipitation, Climate ... - Earth Eclipse
WEBCoral reef biomes are mostly located in shallow tropical regions of the Western Pacific, Indian and Atlantic Oceans. These locations happen to be ideal for growth, settlement, and survival of hard corals. Coral reefs are not able to endure temperatures that plummet below 18 degrees Celsius.
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Coral - National Geographic Society
WEBJul 18, 2024 · Corals provide habitats for fish and other organisms in the ocean. The Northwest Hawaiian Island coral reefs are home to about 7,000 species of plants and animals. Coral reefs not only provide marine species with …