Florida beaches spared worst of smelly sargassum invasion – so far

The Sunshine State saw a record-breaking invasion of sargassum during the spring and summer months last year, but the amount of seaweed reported so far in 2024 has been much lower.

FORT LAUDERDALE, Fla. – There are only a few precious summer weekends left, and people are hopeful that the smelly sargassum seaweed that coated beaches along the Florida coast last year will stay away.

The Sunshine State saw a record-breaking invasion of sargassum during the spring and summer months last year, but the amount of seaweed reported so far in 2024 has been much lower.

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Sargassum is usually spotted during the spring and summer in the tropical Atlantic Ocean, the Caribbean Sea and the Gulf of Mexico.

It’s a habitat for marine life as it floats in the open ocean, but after it washes ashore, people say it can get bothersome and smells very bad.

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The Sunshine State has been spared the worst of it – so far.

"We actually predicted this three months ago," said University of South Florida Oceanography Professor Chuamin Hu. "We said, this year Florida may see just a little amount or nothing."

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The superintendent of park operations in Fort Lauderdale told FOX Weather Correspondent Brandy Campbell that crews still need to clear beaches of sargassum this year, but records show they’ve picked up about a third of what was cleared in 2023.

So, what makes this year so different?

Earlier this year, researchers started to notice a lot of sargassum in the tropical Atlantic and eastern Caribbean, but it didn’t continue to develop too fast, per usual.

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Researchers are also taking a look at ocean currents.

"By ocean currents, if you don’t have a strong ocean current, then you don’t have the momentum," Hu said. "So, that’s the only explanation as to why they grow not as fast as in past years, there could be multiple factors – ocean temperatures, nutrient availability."

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The latest outlook indicated Florida and the Florida Keys will continue to see batches of sargassum. The southern portions of the Bahamas will see drifting mats of the smelly seaweed.

Barbados and the Lesser Antilles, Puerto Rico and the Dominican Republic are among some of the places seeing the worst of the sargassum seaweed so far in 2024.

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