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

The tentacles of a specimen of Corallimorphus profundus from the Ross Sea

A close-up of acrospheres at the tip of the tentacles of a specimen of Corallimorphus profundus from the Ross Sea. These structures contain the nematocysts or stinging cells of the corallimorpharian. Credit: Chazz Marriott, NIWA