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

Oceans

We aim to provide the knowledge needed for the sound environmental management of our marine resources.

  • (no image provided)

    Coralline Algae

    This identification guide covers the common crustose coralline algae found in central New Zealand.
  • What is Ocean acidification?

    NIWA oceanographer Dr Cliff Law explains the impacts of ocean acidification on organisms that use carbonates to build their shells, and on bacteria.
  • (no image provided)

    New map reveals New Zealand’s seafloor in stunning detail

    News article
  • “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.
  • 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.
  • Rig shark

    Research Project
    Rig shark is an important inshore commercial fish species in New Zealand, and we need to understand more about their habitats, movements, nursery grounds and vulnerability to human impacts to ensure they are managed sustainably and their productivity is enhanced.
  • Aquaculture Activities

    Shellfish gathering and farming take place in marine and freshwater environments.
  • (no image provided)

    Summer Series 7: Beware! The golden triangle of the bronze whaler

    News article
  • (no image provided)

    Exploration sector

    Hydrocarbons, although requiring increasingly responsible use, are still an essential part of our modern economy. NIWA has provided survey and consultancy services related to the exploration of offshore mineral resources for thirty years.
  • (no image provided)

    Scientists set to delve into the secrets of the Cook Strait mega-canyon

    News article
  • Scientists explore deepest parts of the Kermadec Trench

    Media release
    Scientists exploring the Kermadec Trench believe they have retrieved the deepest ever sediment sample from the bottom of the ocean using a wire-deployed corer.
  • (no image provided)

    Smart Rain Intensity Gauge - NIWA SRIG