Four people were treated for Portuguese man-of-war stings after more than 50 man-of-war were found yesterday on Waikīkī Beach as of 2 p.m.

Five other people were stung at Ala Moana Beach and about 10 more man-of-war were found there.

The city Ocean Safety and Lifeguard Services Division called the influx mild. Lifeguards posted warning signs and advised beachgoers.

"It is not unusual to see an influx of Portuguese man-of-war after an extended period of southerly or Kona winds," said Bryan Cheplic, spokesman for the city Emergency Services Department. "Thankfully, this influx is not as large as the influx we saw back in August, but lifeguards will be monitoring the situation and are urging the public to check with them before entering the water."