Algal blooms threaten the economies of the globe’s most tourism dependent nations, scuttle holidays plans and give climate scientists more to worry about

Scientists scramble to explain unusual bloom of Sargassum

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

South Florida beaches faced a sargassum assault this summer that some scientists believe is part of the largest spread of the nomadic marine weed on record, and one that could continue through September.