No-swimming advisory issued for Anini Beach Park after man o' war sightings
Anini Beach Park got a no-swim advisory after Portuguese man o' war were spotted. County officials warned children and first-time visitors were most at risk.
County Ocean Safety officials posted a no-swimming advisory at Anini Beach Park on Saturday after Portuguese man o' war were spotted in the water, putting a weekend stop to swimming at one of Kauai’s most familiar North Shore beaches. Warning signs went up in the area, and the county said the waters would be reassessed Monday morning.
The hazard matters because Portuguese man o' war are not fish or jellyfish, but their tentacles can deliver painful stings that can drive swimmers out of the ocean in a hurry. On Kauai, that risk can be easy to miss from shore: water that looks calm from the sand can still hide a sting threat offshore. Children and visitors who do not recognize the animal are among the people most at risk, especially if they wander into the water before noticing posted warnings.
The county’s warning also fit a pattern seen elsewhere on the island. Kauai County issued a similar no-swimming advisory at Lydgate Beach Park on June 2, 2025, with reassessment planned for the next morning. The county has also posted north-facing-shore advisories that specifically include beaches beginning with Anini Beach and stretching westward, underscoring how quickly conditions can shift across the North Shore, including spots near Hanalei Bay.
If someone is stung, Kauai County and University of Hawaii guidance point to the same first-aid steps: rinse with vinegar to help remove tentacle fragments, then use hot water or a hot pack for pain relief. Public guidance also says not to use plain water or alcohol on the sting. Any severe reaction calls for medical attention, and officials want beachgoers to treat posted signs as the first line of protection before the sting becomes an ambulance call.
The Ocean Safety Bureau says its job is to educate tourists and local residents about dangers at beach locations, and it tells the public to get current ocean-safety information from lifeguards at county towers, the Ocean Safety Bureau phone line at 808-241-4984, and the Safebeachday county page. For families planning a North Shore beach day, the practical rule is simple: do not swim where the signs are posted, and wait for the county’s reassessment before assuming the water is safe again.
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