Oceans

The Ocean Survey 20/20 (OS 20/20) programme aims to provide NZ with better knowledge of its ocean territory.

NIWA answers a wide range of scientific questions using ocean modelling. These models can be linked to well established weather forecasting models to predict ocean temperature, sea level and the dispersal of pollution.

NIWA's has mapped the seabed off the coast of Otago, revealing the structure of nine canyons in the Great South Basin. This survey is providing new information about geological processes in the region as well as clues to what types of life might exist on the seafloor. 

Understanding how material released into the ocean spreads is very important in the case of oil spills, sediment transport and the release of invasive species. 

An interactive guide to the sea squirts (ascidians) of New Zealand's coastal waters.