Emergency personnel responded to a report of a swimmer in distress at China Walls Saturday afternoon.
The call came in around 4 p.m.
Emergency Medical Services said the injured 19-year-old man jumped into the water at the infamous spot. Witnesses said he was then smashed into the rocks by a large wave.
Bystanders pulled him out of the water and took him to a safe place where first responders eventually arrived and treated the man.
EMS said he suffered serious injuries to his head and upper body.
Read Hawaii News Now
Photo by jijake1977 
