red sea reef ????♥️????‍♀️ #underwater #egypt #redsea #shorts

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1. **Living Organisms**: Corals are colonies of tiny animals called polyps.
2. **Long-lived**: Coral reefs can last thousands of years and are among the oldest ecosystems on earth.
3. **Biodiversity**: Coral reefs support about 25% of all marine species, despite occupying less than 1% of the ocean floor.
4. **Symbiosis**: Corals live in symbiosis with algae, which provide them with nutrients and bright colors.
5. **Vulnerability**: Corals are very sensitive to environmental changes such as rising water temperatures and pollution.
6. **Calcium Carbonate**: Corals' skeletons are made of calcium carbonate, which they secrete for protection.
7. **Reef Builders**: Corals create reefs that protect coastlines from erosion and storms.
8. **Variety of Shapes**: Corals come in many shapes and sizes, from small branched ones to massive brain-like structures.