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Mexico races to remove record seaweed growth from Caribbean beaches

Mexico is battling a record amount of sargassum, a brown seaweed that has a foul smell. The seaweed is choking beaches along the Caribbean coast. According to new data, officials in Quintana-Roo, which is home to popular resorts such as Cancun, Playa del Carmen, and 'Tulum,' have cleared 105,000 metric tonnes of sargassum this year. This figure already surpasses the previous record of 92,783 metric tons set last year. This haul puts the state in a position to surpass earlier projections of 2026, and intensify what officials describe as one of "the worst sargassum season on record." The authorities had estimated that 119,000 tons of sargassum could wash up on the shore this year. Scientists believe the massive blooms have been fueled by fertiliser-rich runoff, including nitrogen and phosphorus from Brazil and other agricultural powerhouses. As the seaweed rots, it releases hydrogen sulfide which irritates the nasal airways.

Oscar Rebora is the Quintana Roo environment minister. He said that forecasts are uncertain.

Rebora added that the most recent tally as of Tuesday was the current one. He said that Playa del Carmen had the highest volume of seaweed collected to date. The seaweed is a constant for workers who are charged with cleaning the beaches. Vitinia Villemontes, a cleanup worker in Puerto?Morelos said that sargassum has been arriving non-stop.

"This year, it just didn't stop." "Sargassum continued to arrive from July to July," she said. "It is virtually impossible to keep it under control."

Sargassum is a weed that has been encroaching on beaches in the 'Caribbean for the last decade. It threatens the tourism industry, which underpins the economy of Quintana Roo.

Some companies claim that creating a market to sell the algae could offset the high costs of collection.

Carbonwave, a company that processes sargassum to?liquid biostimulants, fertilizers and other products, said: "We believe creating value out of it is one of the strategies we can use to reduce the sargassum issue."

Mexico's Environment Ministry has identified dozens projects to turn sargassum products into bioplastics, biofuels, and fertilizers. The government's support for commercializing the sargassum is limited. Most of its funds are still used to clean up. (Reporting and Writing by Daina-Beth Solomon, Andrea Ricci and Paola Chiomante)

(source: Reuters)