Caribbean Faces Record Sargassum Crisis as Mexico Intensifies Cleanup Efforts and Explores Biofuel Solutions
MEXICO CITY: The Caribbean is grappling with an unprecedented influx of sargassum seaweed, prompting hotels to reduce rates and invest millions in cleanup efforts. Each day at dawn, hundreds of hotel workers, tractor operators, and specialized Navy personnel mobilize to remove vast quantities of rotting sargassum from the beaches of popular tourist destinations.
This seasonal phenomenon has led to significant financial implications for the hospitality sector across the Caribbean, as establishments strive to maintain their appeal amid the foul-smelling algae. Governments and businesses are actively seeking long-term solutions to address this growing environmental challenge.
Origins of the Sargassum Surge
Historically, sargassum—a brown seaweed—was confined to the Sargasso Sea in the North Atlantic. However, in 2010, unusually strong winds displaced it into nutrient-rich waters off West Africa, creating ideal conditions for its proliferation. This shift allowed the seaweed to form a self-sustaining belt that rides ocean currents, reaching northern Brazil and the Caribbean, where it has increasingly impacted island nations and the Gulf of Mexico.
The sargassum thrives on nutrients from major rivers, including the Amazon, Orinoco, and Congo, as well as upwelling from the deep ocean, Saharan dust, and rising sea temperatures.
Projections for Sargassum Abundance
The University of South Florida’s Optical Oceanography Lab anticipates that 2026 will be among the years with the highest sargassum abundance. More seaweed is expected to accumulate in the Caribbean and southeastern Florida in the coming months. Brian Barnes, a research assistant professor at the university, noted the unpredictability of the phenomenon, stating that the mass of sargassum has increased dramatically since 2010, from 1 million metric tons to an estimated 40 million last year. He suggested that the seaweed could be doubling in mass every five years.
Mexico’s Response to the Crisis
In Mexico, authorities are taking proactive measures to safeguard key tourist areas along the Riviera Maya, including Cancun, Tulum, and Playa del Carmen. This includes acquiring additional boats for sargassum collection and deploying larger barriers offshore. According to government data, Mexico has removed approximately 96,151 metric tons of sargassum this year, a rise from 92,783 tons in the previous year.
Mara Lezama, the governor of Quintana Roo, emphasized the importance of intercepting sargassum at sea before it reaches the coast. Federal officials are also anticipating the arrival of a new open-sea sargassum vessel within a month and are exploring options to acquire more ships from Japan, as well as providing smaller vessels to the Dominican Republic.
Environmental and Economic Considerations
Some companies are pursuing carbon credits by collecting sargassum, which releases methane as it decomposes, and sinking it to the ocean floor. However, this practice has raised concerns regarding potential negative impacts on deep-sea ecosystems and the risk of over-harvesting offshore clusters. Barnes highlighted the ecological balance, noting that offshore sargassum serves as a habitat for various marine species, including turtles and fish.
While many companies have sought his expertise on carbon credit projects, Barnes expressed skepticism about their potential benefits.
Innovative Solutions Amidst the Crisis
The overwhelming presence of sargassum has spurred entrepreneurs to explore its conversion into energy sources and commercial products, despite challenges such as the removal of toxic metals absorbed by the algae. Environment Minister Alicia Barcena reported that out of nearly 200 projects in Mexico, at least 11 have the potential for industrial scaling, while 39 are already producing items ranging from fuel and fertilizers to bioplastics and craft sandals.
Felix Navarrete, an executive at sargassum refiner Carbonwave, indicated that the company is already exporting fertilizer and is now looking to supply domestic farmers after receiving regulatory approval. Carbonwave is also exploring opportunities in the cosmetic and textile industries, while the Quintana Roo government plans to expand a biofuel plant in Cancun.
Future Directions and Collaborative Efforts
As Caribbean governments and industry leaders acknowledge the severity of the sargassum crisis, they continue to encourage tourists to visit their beaches, advising them to stay informed and choose less-affected areas. Mexico is set to host a joint European Union-Caribbean conference on sargassum in early October in Cancun, where representatives will discuss strategies for enhancing sargassum collection while protecting coastal ecosystems.
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Published on 2026-08-01 08:52:00 • By the Editorial Desk
