UPDATE: A 67-year-old man from Merewether is unconscious in the John Hunter Hospital after being pulled from the water at Dixon Park Beach earlier today.
It's believed he suffered a medical episode while swimming about 20 metres offshore.
Newcastle City Police attended his home to take his wife to hospital, where he is in the Intensive Care Unit.
EARLIER: A man has been pulled unconscious from the water at Dixon Park Beach.
Emergency services were called to the beach at 10:15am, after the man was found floating face down.
A NSW Ambulance spokesperson says the man is in cardiac arrest and paramedics are trying to resuscitate him.
Four ambulances are at the scene.
The patient's expected to be transported to John Hunter Hospital soon.