The most species-rich environment on our planet is built by tiny animals
In short: Explore the complex architecture of coral reefs, from the microscopic polyps that build them to the vast underwater cities they support. This documentary captures the vibrant biodiversity of these essential marine ecosystems.
Coral reefs are constructed by colonies of hundreds to thousands of tiny marine invertebrates called polyps. These sessile animals create hard exoskeletons made of calcium carbonate, which slowly grow into complex, three-dimensional structures. While corals are found in oceans ranging from tropical to freezing temperatures, they only form reefs in warm, shallow tropical seas.
These reefs act as critical habitats, providing food and shelter for a vast array of life, including fish, molluscs, sea urchins, and sponges. The Coral Triangle in Southeast Asia is recognized as the world's most biologically diverse reef region, while the Great Barrier Reef in Australia stretches approximately 2,300 kilometres long.
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Sources
- Summary by Intellect · source: Coral Reef | Nature Documentary | Full Movie | StreamCore
- Also: What is a coral reef? | Natural History Museum
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