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A blanket of seaweed smothers coastlines from the Caribbean to Mexico
Swaths of seaweed are blanketing Caribbean and Gulf of Mexico coastlines, suffocating marine life and harming tourism. Scientists report 27 million metric tons of sargassum in July 2025, with Mexico investing $115 million to address the crisis. The algae is now growing locally instead of being carried by currents, marking a significant shift from historical patterns.
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