Fourteen asylum seeker families that have been separated by Australia's offshore detention policy are taking their case for reunion to the United Nations.
The group of 63 includes five babies born in Australia whose fathers are indefinitely detained on Nauru and a father detained on Manus Island for five years whose wife and children are living in Sydney.
There are also dozens of others permanently separated because they arrived and sought protection in Australia on different dates.
The group is being represented by members of the Human Rights Law Centre.
The centre's Freya Dinshaw told Koro Vaka'uta about the action.