The city's Ocean Safety Division has issued a box jellyfish advisory today and possibly tomorrow. Warning signs are posted.

The most commonly affected area is Waikiki Beach, especially in the water near the Kapahulu groin.

Other near-shore waters that may see box jellyfish include Hanauma Bay, Poka'i Bay, Makaha Surfing Beach and Waimea Bay.

Lifeguards caution people from getting into the water, especially if they're allergic to box jellyfish stings.

Those stung by box jellyfish are advised to flush the sting area with copious amounts of white vinegar. Anyone experiencing difficulty breathing, muscle cramps or spasms, or persistent pain are advised to seek immediate medical attention.

Lifeguard stations are equipped to treat stings.

For public information regarding ocean conditions, advisories, and warnings, call the city's 24-hour recording at 922-3888 x 51. Our visit http://oceansafety.soest.hawaii.edu.