Authorities hold grave concerns for the man who hasn't been seen almost a day after he was swept out to sea while trying to rescue another swimmer at a Gold Coast beach.
The 35-year-old was swept out past the breakers when he and two other men came to the aid of the man in trouble at Miami Beach about 6pm on Thursday.
Acting Chief Superintendent Rhys Wildman says the swimmer was safely brought back to shore, but the rescuer was swept out into the ocean.