He dived too deeply, and struck his head on the bottom. The injury was serious enough for the doctor who examined him at Mornington, to have him taken immediately by ambulance from Mornington to St Vincent's Hospital at Fitzroy.
He submerged himself excessively, resulting in a severe head impact. The medical professional who assessed him at Mornington deemed it necessary to transport him promptly by ambulance from Mornington to St Vincent's Hospital at Fitzroy.