31 million tons of seaweed ready to stink up Florida's beaches

Breakthroughs, discoveries, and DIY tips sent every weekday. A smelly, sometimes toxic "killer belt of seaweed" might put a damper on Floridians' Memorial Day weekend plans. Sargassum is back just in time for the unofficial start of summer and this year's influx of the brown algae would be record breaking at 31 million tons. Sargassum is a genus of large brown seaweed. As a seaweed, it is also a type of algae.