Grey mullet have a worldwide distribution and Aotearoa is at the southern limit of their range.

Nutrients in waterways are essential for the growth of algae and aquatic plants but too much can destroy an ecosystem.

Tau kōura is a traditional Māori fishing method commonly used to harvest kōura or freshwater crayfish in areas where they are abundant.

Providing educational resources to school students and teachers is part of NIWA's commitment to helping young New Zealanders discover more about science and technology.

The climate of this zone is greatly dependent on the lie of the massive Southern Alps to the west.

Heavy rainfall is one of the most frequent and widespread severe weather hazards to affect New Zealand.

National climate maps

The process of coming to work with us has five steps: applying, a phone interview, a face to face interview, background checks, and an offer.

Maps of the average first and last dates of soil moisture deficit are shown here.

Information about past climate is obtained from piecing evidence together from various sources.

Temperature affects the number and type of animals and plants that live in a waterway.