There is the possibility of getting stung, so ocean safety officials are advising people to stay out of the water if they know they are allergic and/or don't want to be stung. The influx is expected to peak tomorrow.

The most commonly affected area is Waikiki Beach, especially in the "pond" area 'ewa of the Kapahulu groin.

Other near-shore waters that have been affected include Hanauma Bay, Pokai Bay, Makaha Surfing Beach and Waimea Bay. There have also been occasional sightings and or stings on other north and west shore beaches.

Lifeguards will assess beaches for box jellyfish during the alert period. If box jellyfish are discovered warning signs are posted as warranted.

Persons stung by box jellyfish are advised to flush the sting area with copious amounts of white vinegar. Anyone experiencing breathing difficulty, muscle cramps,spasms, and/or persistent pain is advised to seek immediate medical attention. Lifeguard stations are equipped to treat this type of marine sting.