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

Mangroves in the southern Firth of Thames.jpg

Mangroves in the southern Firth of Thames
Ron Ovenden, NIWA
Mangroves have colonised some 11 km2 of intertidal flat in the southern Firth of Thames over the last 50 years. Credit: Ron Ovenden