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Marine heatwaves
Research ProjectTemperatures around Aotearoa New Zealand are increasing, and not just on land. Amid a changing climate, significant marine heatwaves have impacted Aotearoa over the past decade and are expected to become more frequent and intense. -
Marine biosecurity
ServiceIntroduced pests and diseases can harm the health of Aotearoa New Zealand's marine ecosystems, our seafood industry, and the social and cultural benefits that we derive from the sea. -
Extreme coastal flood maps for Aotearoa New Zealand
ServiceDecisions about how we adapt to sea-level rise need to be based on information about our exposure to coastal flooding. -
Storm-tide red-alert days 2023
ServiceStorm-tide red alerts are the highest high tide (also known as king tides) dates that Emergency Managers and Coastal Hazard Managers should write in their diaries and keep an eye on adverse weather (low barometric pressure, onshore winds), river levels and sea conditions (waves and swell). This page shows the 2023 dates of the highest high-tide "red alert" dates, and the lowest high-tide dates. -
Seabed 2030
Research ProjectNIWA is leading a New Zealand partnership to map the South and West Pacific Ocean's seabed as part of a worldwide initiative to map the entire globe’s seafloor. -
Freshwater Ecological monitoring
We offer a range of ecological monitoring tools. -
Ngā Waihotanga Iho - The Estuary Monitoring Toolkit
Software Tool/ResourceThe main purpose of Ngā Waihotanga Iho is to provide tools for the public to measure environmental changes that occur in estuaries over time. These changes may occur due to natural processes and/or human activities. -
Restoration of aquatic ecosystems
Research ProjectThis project aims to increase our knowledge of aquatic ecosystems and their restoration, and apply this to degraded streams, rivers, lakes and estuaries. -
"Now or never": fight against invasive clam gets critical boost
Media release19 September 2024NIWA has been awarded $10.2m to eradicate an invasive clam that was only recently discovered in New Zealand waters. -
The Bio-Acoustic Fish Fence
Research ProjectInvestigating the effectiveness of an acoustic bubble-screen in minimising the movement of pest fish -
Seafloor impacts of Cyclone Gabrielle revealed
Media release08 May 2024Scientists have found evidence of sediment impacts on seafloor ecosystems following Cyclone Gabrielle. -
New study to combat harm caused by anchoring
Media release16 April 2024Ship anchors may cause extensive and long-lasting damage to the seafloor, according to new NIWA research.