Coral reefs are the rainforests of the sea
Coral reefs, often called the rainforests of the sea, pack more species per acre than any tropical rainforest, making them vital for ocean health and global ecosystems.
Coral reefs are biodiversity hotspots, housing more species per acre than even tropical rainforests. These underwater cities, built by tiny polyps, cover less than 0.1% of the ocean floor but support about 25% of all known marine species. In contrast, rainforests span vast areas, making reefs incredibly dense with life.
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