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Caribbean Reefs Face Crisis: 48% Coral Loss Since 1980

12/10/2025

47 4 Full Breakdown

Summary

Story summary

The Caribbean reefs have lost 48% of hard coral since 1980, due to climate change and marine heatwaves.
In 2023–2024, unprecedented thermal stress caused a 16.9% annual decline in coral cover.
Bleaching followed the loss of microalgae, essential for coral health.
Resilient coral colonies in the Gulf of Mexico prompted a new marine protection area.

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Story summary

The Caribbean reefs have lost 48% of hard coral since 1980, due to climate change and marine heatwaves.
In 2023–2024, unprecedented thermal stress caused a 16.9% annual decline in coral cover.
Bleaching followed the loss of microalgae, essential for coral health.
Resilient coral colonies in the Gulf of Mexico prompted a new marine protection area.