OAHU (KHNL) -- Ocean Safety officials are warning beachgoers of high surf and box jellyfish on Oahu.
Officials confirmed a mild influx of box jelly fish washed up on Oahu's southern shores Monday morning. Ten were found in Waikiki and 13 at Hanauma Bay.
Lifeguards posted signs along the beaches.
Lifeguards in the Waikiki Beach area treated ten people suffering from jellyfish stings.
Beachgoers are also being warned of large surf. Officials say potentially hazardous surf has begun arriving on Oahu's North Shore.
The National Weather Service issued a high-surf warning for the north shores of Niihau, Kauai, Oahu, Molokai and Maui through Monday night.
A high surf advisory has been issued for the west facing shores of Kauai, Maui and the north facing shores of the Big Island through Monday night. Surf along north and west facing shores is expected to reach the 20 to 30 feet.
Ocean Safety officials are reminding beachgoers to: