Sargassum, a type of brown macroalgae, has been inundating beaches across the Caribbean since 2011. It comes from the Sargasso Sea in the Atlantic Ocean. The seaweed has harmed Caribbean economies and human health, making it a national emergency in some island-nations.

Over the past decade, entrepreneurs and scientists have found ways to turn sargassum into nutrient-rich biofertilizers, biostimulants and other organic products to boost agricultural yields while cutting back on chemicals.

This article details how different startups in the Caribbean are turning excessive seaweed into agroecology solution.