Antilles

In the Antilles, sargassum is smothering mangroves and marine seagrass beds, making these spaces uninhabitable for wildlife and plants. Research by the University of the Antilles highlights the severe impact of these brown algae on biodiversity, following a 2025 request from the Guadeloupe prefecture. This issue, intensified since 2011, stems from climate change and shifts in ocean currents.