Sea Lice Are Surging in Florida — Here’s How to Avoid Them
Sea Lice Are Surging in Florida — Here’s How to Avoid Them
US · Published May 22, 2026
Massive amounts of sargassum seaweed washing onto South Florida beaches are bringing an unpleasant side effect: sea lice.
Despite the name, sea lice are actually tiny jellyfish larvae that can become trapped under swimsuits and trigger itchy, painful rashes known as seabather’s eruption.
Health experts warn the decomposing seaweed can also release foul-smelling gases and harmful contaminants.

Why It's Important?

This surge in sea lice and the associated health risks affect anyone planning to visit or swim at South Florida beaches. Seabather's eruption can cause significant discomfort, disrupting recreational activities and potentially leading to medical visits. The presence of decomposing sargassum also impacts local ecosystems and tourism, as the foul odors and potential contaminants can deter visitors. Understanding the risks and taking preventive measures is crucial for protecting personal health and enjoying Florida's beaches safely. Awareness and proactive steps can mitigate the negative impacts of this natural phenomenon.

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