Sea mounts

NIWA experts have decades of experience studying the thousands of seamounts that lie beneath the waters around New Zealand as an important habitat for many marine species.

  • Making big waves in the Pacific

    Feature story
    Prior to 15 January, Hunga Tonga-Hunga Ha'apai was a little-known undersea South Pacific volcano with a long name. Within 24 hours, it  was a global phenomenon – the site of the largest atmospheric explosion in almost 150 years. Jessica Rowley looks at why a remote Tongan volcano took the world by storm.
  • Tracking an eruption

    Feature story
    Stacy Mohan looks at how the shockwaves from a remote Tongan island rippled through NIWA’s research community.
  • The instruments at work - In the volcano's wake

    Our team onboard RV Tangaroa are equipped with all the tech and tools they need to explore the undersea changes caused by the devastating volcanic eruption in Tonga earlier this year.
  • Mapping the Tongan eruption

    The January eruption of the Tongan volcano Hunga Tonga – Hunga Ha’apai triggered tsunamis as far away as the Caribbean. NIWA scientists are onboard RV Tangaroa surveying the ocean around the volcano, working to understand the largest eruption of its kind since 1981 so they can help increase our knowledge about similar volcanoes around the world.
  • Norse goddess reveals seabed secrets

    Feature story
    A large, orange Scandinavian robot gives NIWA’s marine geologists an in-depth look at changes to the seafloor off Kaikōura.
  • 2020 - Seamount Communities

    Seamounts, knolls, and hills are prominent features of underwater topography in the New Zealand region and are often sites of high biodiversity and productivity.
  • Nameless nodes get new look from NIWA

    Media release
    At the bottom of the Southern Ocean, near Cape Adare in East Antarctica, lies an undersea ridge which until this month was only known by its co-ordinates: -71.2132 latitude, 172.1649 longitude.
  • Silicon power

    Feature story
    Massive increases in computing power are allowing NIWA scientists to not only analyse more data, faster, but also to envisage completely new experiments.
  • (no image provided)

    New map reveals New Zealand’s seafloor in stunning detail

    News article
  • (no image provided)

    Mountains in the Sea: the Louisville Seamount Chain

    We are currently steaming out towards our survey area, the Louisville Seamount Chain, which is about 1500 km from Wellington.