
Coral reef ecosystems - National Oceanic and Atmospheric …
Sep 25, 2025 · 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, …
Coral reef - Wikipedia
Coral reef ecosystems contain distinct zones that host different kinds of habitats. Usually, three major zones are recognized: the fore reef, the reef crest, and the back reef (also called the reef lagoon).
What is a Coral Reef? - NASA
Oct 15, 2024 · A coral reef is a term used to describe the collective structure of hard corals that help shape a coral reef ecosystem. “A coral reef is a reef whose main structure is made by living …
Reef Ecosystems - Woods Hole Oceanographic Institution
Nov 19, 2025 · Our global ocean provides equally essential ecosystem services—including half of the oxygen we breathe—and coral reefs are among the primary sources of these services.
Coral reef | Description, Geochemistry, Origins, & Threats | Britannica
Dec 26, 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 …
Coral Reef Ecosystems
What is the coral reef ecosystem? The health, abundance and diversity of the organisms that make up a coral reef is directly linked to the surrounding terrestrial and marine environments. Mangrove forests …
Coral reefs | UNEP - UN Environment Programme
Jan 20, 2025 · The loss of coral reef ecosystems has profound impacts on biodiversity in our ocean, and also the livelihoods and safety of hundreds of millions of people around the world.
Basic Information about Coral Reefs - US EPA
Feb 5, 2025 · Coral reefs are among the most biologically diverse and valuable ecosystems on Earth. This web site describes the importance of coral reefs, threats to them, and ongoing efforts to protect …
The Ecological Role of Corals: What are coral reefs?
2 days ago · Ecological Role of Corals When we think of corals, we often imagine colorful reefs populated by tropical fish. In reality, corals are much more than just decorative elements of the sea: …
the coral reef ecosystem | SECORE
Corals form the basis for an entire ecosystem, they build the reef themselves. Many inhabitants of the reef have a close relationship with the corals and with each other, leading the reef to sustain itself as …