Sargassum accumulation affects Quintana Roo coastline

Massive accumulations of sargassum macroalgae are impacting the coastline of Quintana Roo, Mexico. According to monitoring data from the Secretariat of Ecology and Environment (SEMA), 62 coastal points have reported elevated concentrations. The situation is particularly critical in the southern region, where most monitored beaches show abundant or excessive levels.

In total, 25 beaches are classified with excessive sargassum (red status) and 37 with abundant accumulations (yellow status). Affected areas include the Riviera Maya tourist corridor, Tulum, and various sectors in the north such as Playa Xhanan and El Castillo. While northern areas like Cancun and Puerto Morelos show variable conditions, the southern coast faces more severe impacts.

In Xcalak, local representatives report that decomposing sargassum is deteriorating water quality and harming marine life. The decomposition process consumes dissolved oxygen and releases organic matter and hydrogen sulfide, leading to water turbidity and the appearance of dead fish. Residents have called for increased support from the Secretariat of the Navy (Marina) to assist with extraction efforts, noting that current resources are primarily concentrated in Mahahual.