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

  • Critter of the week

    In this blog series, we feature a new critter from our expansive invertebrate collection including pictures of specimens in their unique habitat. The blogs also feature news, links and fun facts that showcase New Zealand’s fascinating marine fauna.
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    CASAL

    CASAL is an advanced software package developed by NIWA for fish stock assessment.
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    Summer Series Week 4: Know your shells

    News article
    If you're collecting sea shells at the beach this summer and wondering what they are, NIWA is here to help.
  • Huka Falls

    Our mission

    NIWA's mission is to conduct leading environmental science to enable the sustainable management of natural resources for New Zealand and the planet.
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    Mean monthly temperatures (°C)

    These datasets are available in a range of formats.
  • Climate Change Vulnerability Assessment (CCVA)

    Service
    To prepare for changes in climate, our freshwater and oceans decision-makers need information on species vulnerability to climate change.
  • Assessment of crop and tree species growing potential using climate, soil and topographic information

    Research Project
    This project demonstrates how to assess high value alternative land-use options by means of a quantitative analysis of the growing potential of selected niche crops and tree species.
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    Piharau

    Piharau/kanakana are an important mahinga kai species and a prized delicacy for many Māori.
  • QGIS

    QGIS is a free, open source, desktop mapping tool, widely used in New Zealand in government, research, commercial and NGO arenas.
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    Invertebrates and stream health

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    Map South

    Education Resource
    Most of this climate zone is characterised by cool coastal breezes, and absence of shelter from the unsettled weather that moves over the sea from the south and southwest.
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    What do we measure?

    Research Project
    A range of physical and chemical variables are measured in the NRWQN.