The seaweed has inundated beaches, causing an environmental nuisance. As of June 2018, the Great Atlantic Sargassum Belt, as scientists call it, extended 8,850km (5,500 miles) and was made up of ...

which impacts on tourism, fisheries and wildlife, could pose a long-term threat. "The same way we prepare for hurricanes, we have to prepare for sargassum," Antigua's environment minister said ...