http://www.newsweek.com/huge-seaweed-bloom-heading-toward-florida-algae-1787372

A 5,000-mile-wide swarm of seaweed may be slowly creeping across the ocean toward Florida.

The enormous mat of seaweed, measuring twice the size of the contiguous United States (New York City to Los Angeles, California is 2,445 miles), is the result of a huge bloom of sargassum seaweed. Mexican news outlet The Cancun Sun reports that the Riviera Maya is preparing to receive 3 feet of sargassum build-up in the coming week.