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A new found that beached Sargassum seaweed appear to contain high amounts of Vibrio bacteria, the dominant cause of death in humans from the marine environment.

, such as Vibrio vulnificus or , can cause life-threatening gastrointestinal illnesses from eating infected seafood. The bacteria can also cause disease and death by infecting open wounds.

Vibrio bacteria are already known as a threat in waters around the world, but researchers sought to find a connection between the potentially deadly bacteria and two other marine phenomena: the rise of and in the ocean.