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Cancun and eastern Mexico fight a Caribbean algae invasion

October 1, 2025

The beaches of Cancun seem dreamy — but looks can be deceiving: Tons of brown Sargassum algae threaten tourism and the environment. Scientists and residents of the region are feverishly seeking solutions as the plague grows.

https://p.dw.com/p/518YZ

Mexico’s Caribbean coast faces a growing environmental crisis: A massive invasion of Sargassum algae is turning Cancun’s dream beaches into foul-smelling zones. Scientists such as Brigitta van Tussenbroek link the algae spread to climate change and agricultural runoff. Residents and startups are seeking sustainable solutions, but balancing tourism, nature and tradition remains is part of the struggle.