A punch thrown by a “big powerful rugby player” had such force that the brain of his victim bounced from side to side inside the skull and only surgery at University Hospital Cork saved his life, a court heard.

Two young men who crept into the Aqua Dome, one of the country’s largest indoor water parks three nights in a row for a late night swim were convicted of trespass yesterday and warned not to take such a dip again — or face jail.