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How is coral reef produced?

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How Reefs Are Made. Coral reefs are built by coral polyps as they secrete layers of calcium carbonate beneath their bodies. The corals that build reefs are known as “hard” or “reef-building” corals. read more

What are Coral Reefs. Appearing as solitary forms in the fossil record more than 400 million years ago, corals are extremely ancient animals that evolved into modern reef-building forms over the last 25 million years. Coral reefs are unique (e.g., the largest structures on earth of biological origin) and complex systems. read more

Coral reefs are diverse underwater ecosystems held together by calcium carbonate structures secreted by corals. Coral reefs are built by colonies of tiny animals found in marine water that contain few nutrients. Most coral reefs are built from stony corals, which in turn consist of polyps that cluster in groups. read more

Coral reef formation is a unique natural phenomenon. It is a diverse ecosystem formed under tropical waters and gives scuba divers and snorkelers a paradise to explore. The bio-diversity of a coral reef is often called the rainforest of the sea. read more

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