With new research showing the melting Antarctic ice sheets will see sea levels rise much higher than predicted, Local Government New Zealand says the country's coastlines need to be redrawn.
Richard Kempthorne is the Tasman Mayor, and a member of the Local Government New Zealand National Council, which has been grappling with how to deal with the big changes ahead.
Mark Munroe is the chair of Christchurch Coastal Residents United a newly created group concerned about the impact any new hazard zoning connected to the report would have on their property values.
They both talk to Kathryn Ryan about the threat of rising sea levels.
