The massive seaweed invasion has started to come onshore on Florida beaches.
There are reports of seaweed coming onshore from Key West to Fort Lauderdale.
Scientists say the stinky sargassum is not dangerous to humans.
However when it comes onshore and out of the water, it rots and can irritate the eyes as well as emit a strong odor.
It could be a stinker for many Florida beach communities looking forward to the busy Spring Break season.
The seaweed bloom is thought to be one of the largest ever.
It measures 5,000 miles right across the Atlantic.
In the west, it stretches to the Caribbean and the northern shores of South America.
It is so large it can be seen from space.
“Because of the size and scope, we’re calling it ‘Seaweed-ageddon,” said Peter Cranis, executive director of Space Coast Tourism Office.
