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

Oceans

NIWA aims to provide the knowledge needed for the sound environmental management of our marine resources.

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    Marine Environment Classification

    Service
    The Marine Environment Classification (MEC), a GIS-based environmental classification of the marine environment of the New Zealand region, is an ecosystem-based spatial framework designed for marine management purposes.
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    Invasive sea squirt (Styela clava) fact sheet

    Styela clava at Viaduct Harbour, Auckland, New Zealand.
  • Other research instruments

    Service
    Scientists across NIWA use specialist tools manufactured across the world to perform their research and environmental consultancy.