Coral reef - Wikipedia
Webt. e. 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 Reefs - National Geographic Society
Web19 Oct 2023 · Coral reefs are important oceanhabitats and offer a compelling case of the risks of climate change. Reefs provide a large fraction of Earth’s biodiversity —they have been called “the rain forests 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 ...
Coral reef | Description, Geochemistry, Origins, & Threats
Web11 May 2024 · 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.
What is a coral reef? | Natural History Museum
WebThe most biologically diverse reefs in the world can be found in a region known as the Coral Triangle in Southeast Asia. Watch a video about corals, the builders of the reef and explore more about coral reefs. Find out what coral reefs are, what animals form them and where you can find them.
Coral reef facts for kids! - National Geographic Kids
WebSome famous coral reefs include the Great Barrier Reef in Australia, the Amazon Reef in Brazil and French Guiana, the Tubbataha Reef in the Philippines and the Miami Terrace Reef in the United States. The “Heart Reef”, which forms part of the Great Barrier Reef in Australia. Quick facts about coral reefs… – Coral have growth rings, just like trees!
Coral reef ecosystems - National Oceanic and Atmospheric Administration
Web1 Feb 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 - National Geographic Society
Web19 Oct 2023 · Coral reefs not only provide marine species with a rich habitat, but they also assist people as well. Millions of people around the world rely on fish caught in and around coral reefs. The reefs also draw in tourists, which helps the local economies. Coral reefs protect people and land from storms as well, serving as a barrier that reduces the ...
Coral Reefs 101 | National Geographic - YouTube
Web7 Nov 2017 · National Geographic. 23M subscribers. Subscribed. 17K. 1.8M views 6 years ago. What are coral reefs? Coral can be found in tropical ocean waters around the world. But how much do you know about...
Scientists are trying to save coral reefs. Here's what's working.
Web4 Jun 2020 · The coral reefs around Fiji cover 3,800 square miles and face threats from climate change, overfishing, and pollution. Photograph by Greg Lecoeur, Nat Geo Image Collection. SCIENCE. NEWS....
Coral Reefs | UNEP - UN Environment Programme
WebCoral reef protection and restoration is also central to the UN Decade on Ecosystem Restoration (2021-2030) which seeks to galvanize efforts to restore degraded and destroyed ecosystems to enhance food security, clean our air, secure freshwater supplies, address the climate crisis and protect habitats that support life on Earth.
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