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Reef - Wikipedia
A reef is a ridge or shoal of rock, coral, or similar relatively stable material lying beneath the surface of a natural body of water. [1] Many reefs result from natural, abiotic (non-living) …
Reef Environmental Education Foundation | Conserving Oceans …
Include REEF in Your Will Planned Giving Take a Dive Vacation That Counts Citizen science trips for divers and snorkelers
REEF Definition & Meaning - Merriam-Webster
Ryan Chan, MSNBC Newsweek, 5 Dec. 2025 Stuart’s home county, Martin County, sits on the most biodiverse estuary in the Northern Hemisphere and is home to 100 artificial reef systems …
Coral reef | Description, Geochemistry, Origins, & Threats
Nov 27, 2025 · 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 …
What is a Coral Reef? - NASA
Oct 15, 2024 · “A coral reef will always be a reef, but not all reefs are coral reefs.” The largest coral reef in the world is Australia’s Great Barrier Reef, which is over 1,000 miles long and …
Coral reef ecosystems - National Oceanic and Atmospheric …
Sep 25, 2025 · 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.
Reef - National Geographic Society
Oct 19, 2023 · A reef is a ridge of material at or near the surface of the ocean. There are natural and artificial reefs.
Coral reefs have orchestrated Earth’s climate for 250 million years
Dec 2, 2025 · Coral reefs have shaped Earth in much deeper ways than we usually appreciate.
Coral reefs have stabilized Earth's carbon cycle for the past 250 ...
Dec 1, 2025 · Coral reefs have long been celebrated as biodiversity hotspots—but new research shows they have also played a much deeper role: conducting the rhythm of Earth's carbon and …