Blue Lake
Invasive algae threatens world’s clearest lake in Nelson
2 Feb 2022
Nelson is home to the clearest lake in the world, but it could have a gloomy future.
An invasive algae called lake snow has been found nearby.
Naomi Arnold went for a hike to find out more. Video, Audio
Resident wants boat ban on Otago lake
28 Dec 2015
People living near Blue Lake in Central Otago are asking whether a 12-year-old boy's death on the lake could have been avoided. Audio