Start with the waterline
Before anyone runs into the Gulf, take a slow look along the wet sand and shallow water. Jellyfish and Portuguese man o' war drift with water and wind, so they may collect on one stretch and later disperse. A current purple beach flag means hazardous marine life is present, but it does not tell you which animal; follow the flag and ask beach patrol for the local reason when staff are available.
A Portuguese man o' war is not a true jellyfish. NOAA describes its most visible feature as a balloon-like float that may be blue, violet or pink. The tentacles can trail far beyond that float and be difficult to see in surf. NOAA also warns that a stranded man o' war can still sting long after washing ashore.
Give every unidentified jelly-like animal space. Do not pick it up, push it with a bare foot or let a child or pet investigate it. If you see several washed ashore, a purple flag, or tentacles in the swash, choose dry sand or another activity. A different access may look clearer, but it is not proof that the water there is free of drifting tentacles.
If someone is stung
First get the person out of the water without touching tentacles yourself. Then:
- Rinse the area with seawater, not fresh water, and do not rub it. Fresh water can trigger more stinging cells, and Texas Parks and Wildlife advises against rubbing the area.
- Remove visible tentacles without bare-hand contact. Use tweezers, heavy gloves or a towel as a barrier. Keep used material away from other people.
- Do not automatically pour vinegar, alcohol, ammonia or another home remedy on it. Poison Control notes that vinegar helps with some jellyfish species and can make other stings worse. When the animal is uncertain—as it often is at the beach—call for species-appropriate advice.
- **Call Poison Help at 1-800-222-1222** for individualized guidance, especially when pain is severe, the animal is uncertain or tentacles are difficult to remove. Seek medical evaluation for a sting in or near the eye, in the mouth or across a large skin area.
Call 911 immediately for trouble breathing, chest pain, collapse, confusion, or hives or swelling away from the contact area. Do not delay emergency care to finish a home treatment. Poison Control's jellyfish guidance is the basis for the seawater rinse, protected tentacle removal and species-specific approach above.
Keep this separate from surf danger
A sting hurts, but entering rough water to avoid something on the sand can create a drowning emergency. Check the beach flags guide and surf forecast before deciding whether anyone should re-enter. If the water is otherwise hazardous, stay on shore and let trained responders handle an animal or rescue concern.