An estuary is a partially enclosed body of water formed where freshwater from the land meets and mixes with saltwater from the ocean.

Our southwest Pacific research focuses on recent and historic climate and weather activity, including our involvement in ACRE Pacific data rescue.

Pauanui South Cam-era station

NIWA collects and manages significant amounts of New Zealand's environmental data, particularly in the climate, freshwater, marine and atmosphere domains.

NIWA offers a range of standard toxicity tests for both freshwater and marine environments.

Forest plantations in Aotearoa can be found on flat, gently rolling, or very steep terrain.

The sex of tuna is not determined genetically, as in some other organisms.

Annual Climate Summaries from 2000 to present.

Methane (CH4) is the second most important greenhouse gas after CO2 that is produced by human activities.

NIWA is doing a nationwide study to discover what makes the best riparian projects. Help us give you the knowledge to make the best riparian management decisions possible by taking our 5 minute survey.

The scientific records of palaeotsunamis to have affected New Zealand shores can now be accessed in a new one-stop information shop.