Honolulu Ocean Safety officials this morning issued a box jellyfish advisory for Waikiki, Ala Moana and Maili beaches on Oahu.

Officials said warning signs have been posted after lifeguards observed the box jellyfish along the shorelines of Waikiki, Ala Moana and Maili Beaches.

“Box jellyfish can cause severe stings to individuals,” said the advisory. “Please use caution when entering waters in this area. Visit any lifeguard tower for the most up-to-date information or assistance.”

Kauai County Ocean Safety officials this morning also posted box jellyfish warning signs at Poipu and Salt Pond beach parks.

Officials advise beachgoers to follow all warning signs and not to swim at the beach parks.

For up-to-date information about ocean conditions and ocean safety, county officials urge visitors and the public to speak to a county lifeguard at any lifeguard station.

Visitors can also visit hawaiibeachsafety.com, or call the Ocean Safety Bureau at 808-241-4984.