The Stinky Seaweed Blob Approaching Florida Is Absolutely Humongous

In the Atlantic Ocean, between the coasts of West Africa and the Caribbean, there’s a disjointed series of mats and clumps of brown, tangled algae known as sargassum seaweed. It’s supposed to be there. Or, at least, some of it is. In the Sargasso Sea—the only sea without a land border, bounded instead by four…