The Great Atlantic Sargassum Belt experienced near-record levels of seaweed in June 2026, impacting the Caribbean Sea and Gulf of America. NASA reports both regions reached all-time highs in sargassum concentration.
The National Aeronautics and Space Administration (NASA) announced that the amount of seaweed composing the Great Atlantic Sargassum Belt hit near-record levels in June 2026. The agency specifically noted that the Caribbean Sea and Gulf of America both experienced all-time high concentrations of sargassum during this period.
The data, released by NASA, indicates a significant bloom of this macroalgae. While the source does not detail *why* these levels are so high, it establishes the *what*, *when*, and *where* of the phenomenon: unprecedented amounts of sargassum in June 2026 across key Atlantic regions.
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