NIWA’s climate scientists can now confirm what you may have suspected. After carefully poring through more than a century’s worth of data, it has been officially determined that winter 2022 was Aotearoa New Zealand’s warmest and wettest on record.

The majority of New Zealanders are able to recall a story about catching eels when they were children.

Find out more about submerged aquatic plant species.

Instrument Systems is a specialised technology-focused consulting group within NIWA.

Submerged plants have a number of advantages that favour their use as indicators of lake ecological condition.

A regional climatology is a summary of the typical weather and climate of a region, based on historical data observations made at climate stations located within the region.

Atlantis is a 3D, spatially-explicit, trophodynamic ecosystem model that integrates biology, physics, chemistry and human impacts to provide a synoptic view of marine ecosystem function.

Whitebait are the juveniles of five species of galaxiidae, a family of fish confined to the Southern Hemisphere.

Some simple steps to minimise the effects of aquaculture activities on water quality and mahinga kai.

Chemical contaminants are chemicals toxic to plants and animals in waterways.

Currently, the most reliable method to estimate the age of tuna is by examination of their otoliths or "ear bones"