ST. JOHN’S, Antigua (Oct. 1, 2025) — Antigua and Barbuda are experiencing a much-needed reprieve from the overwhelming sargassum seaweed influxes that have plagued the Caribbean region this year. Recent satellite data from the University of South Florida’s Optical Oceanography Lab reveals a dramatic reduction in sargassum levels, dropping from a peak of 38 million metric tons in July to 10.4 million metric tons by September. While the East Atlantic still shows historically high amounts, the overall trend indicates a significant decline across the Caribbean. Marine officials confirm that the region is currently in the decline phase of the 2025 sargassum season. However, they caution that localized inundations remain possible as floating seaweed mats continue to drift through Caribbean waters. The sargassum blooms have had severe economic and ecological impacts, particularly on beaches and cultural sites like Nelson Dockyard National Park. Sub-surface accumulations have also blocked sunlight, threatening coral reefs and seagrass beds vital to marine ecosystems. Authorities emphasize the need for continued vigilance, as ocean currents and bloom dynamics could still bring new influxes. Researchers are working on advanced forecasting models to better predict nearshore movements. Scientists attribute the recurring sargassum blooms to climate change and poor resource management, urging regional collaboration to mitigate their effects. Despite the recent decline, the situation underscores the ongoing challenges posed by this environmental phenomenon.
Decline in Sargassum Blooms Brings Relief for Antigua and Barbuda
