On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.

Whitebait net used for capturing glass eels

Sampling for glass eels on the lower Waikato River using a whitebait net. You can read about the results of this study in Jellyman et al. (2009) - Recruitment of Anguilla spp. glass eels in the Waikato River, New Zealand. Evidence of declining migrations? Credit: Erina Rawiri-Watene