Videos

See NIWA scientists talking about their work, along with fascinating animations and underwater footage.

Southern Blue Whiting Fishery
NIWA fisheries scientist Dr Stuart Hanchet describes the history and management of the southern blue whiting fishery, centred around New Zealand's subantarctic islands.
Sea Ice and Climate Change
Dr Mike Williams, physical oceanographer at NIWA, explains the importance of Antarctic sea ice in the Earth's ocean and climate systems and how they may be affected by climate change.
The Microbial Loop
The microbial loop refers to the small microscopic organisms in the ocean – viruses, bacteria, the small phytoplankton and microzooplankton – and the relationships between them.
Climate Change and the Microbial Loop
NIWA biological oceanographer Dr Julie Hall explains how increased sea temperatures are predicted to increase stratification of the ocean, creating a disconnect between the surface waters and deep ocean.
Antarctic Coastal Marine Life in a Changing Climate
NIWA marine ecologist Dr Vonda Cummings discusses the likely effects of climate change on marine invertebrates living on the seafloor of the Ross Sea coast.
Antarctic Climate Change
NIWA climate scientist Dr James Renwick explains what changes are occurring in the Antarctic in response to climate change and what's likely to happen in the future.
Exploring Antarctic Deepsea Life
Most of the Southern Ocean outside of the narrow Antarctic continental shelf is more than 3000 m deep. This poses a real challenge for scientists studying the assemblages of animals living on the seabed.
Antarctic Marine Food Webs
NIWA biological oceanographer Dr Matt Pinkerton discusses the complexities of Antarctic marine food webs, the uniqueness of many of Antarctica's marine animals and the extreme adaptations they display.
The Decline of Subantarctic Wildlife
Populations of rockhopper penguins, elephant seals, and grey-headed albatrosses in the subantarctic have declined quite markedly in recent decades.
Ocean Acidification
The oceans are an important sink for atmospheric CO2, but as they take up increasing amounts of CO2 they are becoming more acidic.
Next Stop Antarctica
Our Far South is an expedition that aims to raise New Zealanders' awareness of the area south of Stewart Island. Gareth Morgan, Te Radar, scientists and 50 everyday Kiwis are onboard to learn and then share their experience. This is the first video produced by them, showing some of the highlights of the trip so far.
Current and Future Management of the Toothfish Fishery
NIWA fisheries scientist Dr Stuart Hanchet explains what makes the Antarctic toothfish fishery one of the best managed fisheries in the world.
Ecosystem Effects and Mitigation of the Toothfish Fishery
NIWA fisheries scientist Dr Stuart Hanchet describes the guiding principles that CCAMLR (the Convention on the Conservation of Antarctic Marine Life) applies to the Antarctic toothfish fishery.
The Antarctic Toothfish Fishery
Antarctic toothfish are fished using longlines in southern Antarctic waters. NIWA fisheries scientist Alistair Dunn describes the history of the fishery and how it has been monitored.
Southern Ocean Productivity
Phytoplankton – microscopic plants that drift in the sunlit waters of the world's oceans – are the engine that drives all of Antarctica's marine food webs.
Iron Fertilisation
Iron dissolved in the ocean is an important trace nutrient for phytoplankton – the microscopic plants that support marine food webs.
Phytoplankton and Climate Change
NIWA biological oceanographer Dr Philip Boyd explains how the Southern Ocean plays a key role in controlling the world's climate, by drawing large amounts of CO2 from Earth's atmosphere into the ocean depths.
Seabird Diversity in the Southern Ocean
The New Zealand archipelago, particularly its subantarctic islands, is a global seabird hotspot. It's home to 25 per cent of the world's breeding seabird populations and a very diverse array of penguin, albatross, petrel and shearwater species.
Subantarctic Oceanography
NIWA physical oceanographer Dr Mike Williams talks about the world's largest current – the Antarctic Circumpolar Current (ACC) – and its influence on the 'oceanography' (ocean characteristics) south of New Zealand.
Antarctic Seabed Biodiversity
It's a common myth that the oceans surrounding Antarctica hold the most diverse array of animals on earth, but they are home to a collection of species found nowhere else.

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