+Coral reefs are vibrant underwater structures built by colonies of tiny [polyps](/wiki/polyp), creating breathtaking formations that support an astonishing array of [marine life](/wiki/marine_life). These crucial [ecosystems](/wiki/ecosystem) protect coastlines, harbor immense biodiversity, and are often called the "rainforests of the sea."
+## See also
+- [Ocean](/wiki/ocean)
+- [Biodiversity](/wiki/biodiversity)
+- [Climate Change](/wiki/climate_change)