It's a potential ticking time bomb in the Hauraki Gulf.
The RMS Niagara was sunk by German mines in 1940 - now the shipwreck off the Northland coast threatens an oil spill worse than the Rena. The Hui investigates the hidden threat to our most pristine taonga.
Plus, we meet waka ama world champion Kacey Ngataki as he shares his journey from waka ama to canoe sprinting.
This livestream is now over. Watch the video.
Made with support from New Zealand On Air and Te Māngai Pāho.