A 16-year-old boy who was free diving in Shark's Cove on O'ahu's North Shore yesterday died of an apparent drowning, authorities said.

The teen was discovered by his friends below the surface of the water. He was unresponsive. City and County Emergency Medical Services transported the teenager to a nearby hospital where he was later pronounced dead. Bryan Cheplic, city EMS spokesman, said that when paramedics arrived, people were performing CPR on the teenager. His name was not released by the Honolulu Medical Examiner's office.