Scientists scramble to explain unusual bloom of Sargassum

A species of invasive seaweed is becoming very abundant and displacing native species.

Sargassum, a type of marine algae, is washing up en masse on Caribbean beaches, closing them down to the public. The same sargassum is here in Miami, lining Miami beaches.

A species of seaweed has been washing up on beaches across the Caribbean and South Florida.

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The foul-smelling seaweed is back yet again.

Scientists say the threat from sargassum is as serious as rising sea levels and hurricanes.

Sargassum is infesting Mexico’s coastline. Researchers are scrambling to stop an ecological crisis, and maybe even make something good of it.

Mexico has spent US$17 million to remove over a half-million tons of sargassum seaweed from its Caribbean beaches, and the problem doesn't seem likely to end any time soon.