A record amount of sargassum has piled up along coastlines of the Caribbean and Gulf of Mexico. Sargassum is a brown seaweed that causes lower oxygen levels and foul-smelling gases when it decomposes on beaches. Researchers and marine scientists have warned that the algae build-up starves under...
Source: [Guardian Environment](https://www.theguardian.com/us-news/video/2026/aug/21/33m-tons-of-toxic-seaweed-clogs-caribbean-beaches-video)