The massive influx of sargassum seaweed to the Mexican Caribbean coast has become a major issue for travelers, hoteliers, and local authorities. In areas like Playa del Carmen, the water, usually turquoise, sometimes appears brown and murky, with accumulations of algae that transform the landscape. As these marine plants decompose, they emit an unpleasant odor that, according to various accounts and analyses, deters some tourists.
The phenomenon is not merely aesthetic: it affects bookings, visitor reviews, and the very image of the Riviera Maya. The sargassum season has become a determining factor in travel decisions, especially during the summer and fall. Therefore, the tourism sector and institutions are seeking solutions that go beyond simply removing the seaweed from the shore.
A coastline under pressure and hotels trying to compensate
In the Riviera Maya, several establishments have strengthened their compensation policies to reduce cancellations and give more confidence to those who book. The Fairmont Mayakoba's "Beach Promise ," valid between September 14 and December 20, 2026, offers an additional night if the guest cannot access the beach due to a massive accumulation of sargassum seaweed, provided they report it to reception and the staff verifies it.
This isn't an isolated measure. Since 2024, hotels in Cancún, Puerto Morelos, and Tulum have implemented measures such as free nights, penalty-free date changes , and alternative leisure activities when rough seas prevent guests from enjoying the sand. Other options include transfers to less affected beaches, access to parks and cenotes, spa or restaurant credits, and partial refunds.
The Riviera Maya Hotel Association (AHRM) maintains that the condition of the beaches continues to influence reviews and travel decisions. These guarantees have become a tool for maintaining bookings and protecting the image of the Mexican Caribbean, although they don't address the root of the problem. For those booking from Spain or the rest of Europe, these types of measures can be a deciding factor when choosing a destination.
Cleanliness, data and international cooperation
While hotels try to manage the guest experience, cleaning efforts are multiplying. Royal Caribbean Group, together with Less Plastic is Fantastic, developed a five-month management program in Mahahual. In that first phase, 977 metric tons of sargassum were removed , 3.054 collection nets were used, and 560 sacks of dried seaweed were produced.
The teams collected the sargassum in the water before it reached the shore and transported it to drying and processing areas. There, debris and other materials were separated. Marine species associated with the seaweed, such as crabs, juvenile triggerfish, shrimp, and frogfish , were also documented, in addition to macroplastics found during the cleanup.
The shipping company plans to extend operations until November, increasing its fleet from two to three vessels and cleaning the navigation channel between central Mahahual and the entrance to Quebrado Norte. The goal is to remove nets from the seabed and debris accumulated around the barriers, in coordination with the Mahahual Sargassum Committee and the Mexican Navy.
According to Semarnat, approximately 10% of the sargassum seaweed that travels through the Mexican Caribbean washes up on the coasts of Quintana Roo due to its geographical location. This helps explain why the problem is particularly intense along the Quintana Roo coastline.
Europe enters the equation: from harvesting seaweed to creating a market
The fourth European Union-Caribbean Conference on Sargassum, held in Cancún, brought a change of approach to the table. Government representatives, scientists, and business leaders agreed that removing the seaweed is not enough : it is necessary to build a regional value chain that allows for its industrial use and sustains employment and investment.
The meeting was attended by 350 representatives from 45 countries and territories, along with Myriam Ferrán, Deputy Director-General of the European Commission's Directorate-General for International Partnerships. The EU views the uncontrolled growth of sargassum as a global challenge and is using its Global Gateway strategy to support Caribbean governments.
The Undersecretary of Sustainable Development and Circular Economy at Semarnat, José Luis Samaniego Leyva, stated that the region aims to collect and process at least 660.000 tons of sargassum seaweed between 2026 and 2027. To achieve this, they are working to overcome bottlenecks such as shared forecasting, unified standards, collection and drying logistics, and scalable financing.
The figures discussed at the conferences indicate 38 million tons of debris floating in the Atlantic in 2025, 60 million in 2026, and nearly 80 million the following year . The governor of Quintana Roo, Mara Lezama, advocated combining science and investment to transform this environmental liability into a development asset.
The Dominican Republic and Barbados agreed on the urgent need to consolidate a sustainable value chain with scientific and financial backing. International collaboration is considered essential to protect tourism and fisheries, and the next conference will be held in the Dominican Republic.
From waste to resource: circular economy and pending challenges
Mexico has identified 198 initiatives for utilizing sargassum, of which 38 are commercializing products and 11 are ready for industrial scaling. The updated National Fisheries Charter reclassified sargassum from waste to a fishery resource , with a potential catch of up to 945.000 tons of dried seaweed annually.
The Circular Economy Development Hub in Puerto Morelos offers space and tax incentives to process up to 4.000 tons of sargassum daily, focusing on the production of bioplastics and biocardboard. Plans are also underway to integrate sargassum into the voluntary carbon market , certifying the reduction of methane emissions when it is collected at sea before it decomposes.
In Playa del Carmen, the second Mexican Caribbean Recycling and Circular Economy Convention addressed these challenges with free admission and a disposable-free event format. The presentation on sargassum transformation reviewed solutions such as composting after neutralization and removal of chemical components, as well as previous upcycling experiences.
Environmental organizations like Cenotes Urbanos warn that some temporary waste collection sites lack the impermeable geomembranes required by the Ministry of Environment and Natural Resources (Semarnat). There is a risk that leachate containing heavy metals will reach the aquifer, a particularly sensitive issue in an area dependent on tourism and natural resources.
The waste situation is also critical: Playa del Carmen generates between 800 and 900 tons of garbage daily, a figure that can reach 1.000 tons per day during peak season. Municipal management, recycling of glass, textiles, cigarette butts, oils, cardboard, and organic waste appear in the program as pieces of the same puzzle.
The sargassum situation in the Mexican Caribbean is a complex mix of tourism, the environment, science, and money. The beaches of Quintana Roo remain the epicenter of the problem, but the response has shifted towards hotel compensation, water cleanups, agreements between Europe and the Caribbean, and the search for industrial uses for the seaweed. The challenge is not only removing the brown stain from the shore, but also preventing the crisis from recurring every season without a unified strategy.