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

Atmospheric analysis

NIWA has been using advanced scientific instruments to measure atmospheric trace gases and isotopes for over 50 years.

  • LakeSPI diver

    LakeSPI: Keeping tabs on lake health

    Software Tool/Resource
    The condition of many NZ lakes is under threat from land-use changes and the invasion of alien aquatic plants.
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    Overview of SHMAK

    An overview of what the SHMAK kit comprises, and various uses for it.
  • Critter of the Week: The Gorgon’s Head - Gorgonocephalus

    A basket star was the first reported animal trawled up from the deep sea back in the early 1800s so they have a spot in the history books of deep ocean exploration.
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    Submerged macrophytes

    Find out more about submerged aquatic plant species.
  • NIWA Instrument Systems

    Instrument Systems is a specialised technology-focused consulting group within NIWA.
  • Winter 2020 – NZ’s warmest winter on record

    Media release
    New Zealand has just experienced its warmest winter on record, according to official NIWA climate data.
  • “Very rare find” of ghost shark hatchling

    Media release
    NIWA scientists have made the rare discovery of a days-old ghost shark during a recent survey off the east coast of the South Island.
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    Coralline Algae

    This identification guide covers the common crustose coralline algae found in central New Zealand.
  • Services

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  • Dissolved oxygen

    Dissolved oxygen (DO) is a relative measure of the amount of oxygen (O2) dissolved in water.
  • Otago

    The climate of Otago is perhaps the most diverse of any region in New Zealand.
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    Tuna - diet

    Longfin eels are the largest and longest-lived fish in New Zealand's freshwaters, and where they are present they are the top predator.