Sargassum seaweed transformation in Mexico

Massive influxes of sargassum seaweed are impacting the Mexican Caribbean, threatening marine ecosystems and local economies in states like Quintana Roo. While the brown macroalgae can suffocate coral reefs and deter tourism, entrepreneurs are increasingly viewing the waste as a resource for a circular economy.

New initiatives are transforming the seaweed into various sustainable products, including fertilizers, cosmetics, footwear, pencils, construction materials, and biochar. Despite these opportunities, the industry faces ongoing environmental and sanitary challenges.

In response to the crisis, President Claudia Sheinbaum announced an integral plan involving 2,000 million pesos (approximately US$ 118 million). The strategy includes utilizing vessels from the Secretariat of the Navy to collect the algae before it reaches the shores and strengthening coordination with the private sector. Scientists from the University of South Florida report that approximately 27 million tons of reproductive sargassum were recorded in July, with projections suggesting 2026 could see the second-largest volume of the algae in the Atlantic, Caribbean, and Gulf of Mexico.