Box jellyfish signs are posted along Oahu's south shore on Tuesday, according to the city's Emergency Service Department.
As of 4:05 p.m., about 2,000 box jellyfish was counted in Waikiki and 115 people were stung.
At Ala Moana Regional Park, there were 230 box jellyfish and three people were stung.
Paramedics were also called for a 5-year-old girl and a 6-year-old girl who had allergic reactions to the jellyfish stings. They were not hospitalized.