A giant "blob" of sargassum seaweed measuring 5,000 miles wide — twice the width of the continental United States — is headed for the Florida coast and already covering beaches with algae that will ...

Read full article: 5,000-mile-wide seaweed blob heading to Florida could make you sick The 5,000-mile mass of seaweed, part of what’s called the Great Atlantic Sargassum Belt, which stretches from ...

Add Yahoo as a preferred source to see more of our stories on Google. Bizarre sea creatures that resemble jellyfish have returned to Southern California waters, a year after millions were spotted ...

Caitlin O'Kane is a New York City journalist who works on the CBS News social media team as a senior manager of content and production. She writes about a variety of topics and produces "The Uplift," ...