"Reef bleaching" refers to a situation where the colorful and vibrant coral reefs lose their bright colors and turn white. This happens when the corals get stressed due to changes in water conditions, like increased temperature or pollution. As a result, they expel their symbiotic algae, which are responsible for providing food and color to the corals. So, when a reef bleaches, it means that it is unhealthy and its beauty and biodiversity are at risk.
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