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

multicorer cores

How many people does it take to decide what to do with each core? Obviously at least four! The separate cores are treated differently: one of them is used to determine sediment characteristics, three are used to look at meiofauna (tiny animals smaller than 0.3 mm) and three more are sieved for macrofauna (>0.3 mm). Credit: Owen Anderson/NIWA