Cancún Braces for Major Sargazo Surge This Summer

Cancún, Quintana Roo — Despite currently enjoying sargazo-free beaches, Cancún may soon confront a severe influx of seaweed this summer, according to projections from the Sargazo Monitoring Network. The organization has issued warnings about an imminent and large-scale arrival of sargazo that could significantly impact Quintana Roo’s coastline.

A Critical Season Ahead

Esteban Amaro Mauricio, director of the Sargazo Monitoring Network, reported that this year, the seaweed began arriving nearly two months earlier than usual, particularly in the southern part of the state.

“In the last three years, we haven’t seen sargazo presence as significant as what’s expected in 2025. Last year alone, over 40,000 tons were collected, and that number will be surpassed this year,” Amaro stated.

Most Affected Areas in Quintana Roo

Currently, the heaviest seaweed accumulations are being recorded in:

• Mahahual
• Xcalak
• Sian Ka’an Biosphere Reserve
• Tulum
• The eastern coast of Cozumel

Meanwhile, Playa del Carmen and Cozumel have experienced intermittent arrivals, while Cancún, Contoy, Holbox, and Isla Mujeres have seen minimal sargazo presence so far. However, satellite imagery indicates a concerning outlook for the coming months.

“We anticipate more intense and frequent influxes along the entire coast,” Amaro cautioned.

Measures to Mitigate Impact

As part of containment efforts, Mexico’s Navy and the state government have deployed 9,500 meters of anti-sargazo barriers. Key installation sites include:

• Puerto Morelos, where 800 meters have already been placed.
• Tulum, which awaits an additional 1,000 meters of barriers.

Amaro emphasized that these barriers will be crucial in safeguarding the Mexican Caribbean’s most popular beaches. He also urged authorities to strengthen strategies in anticipation of potentially unfavorable weather conditions.