On 1 July 2025, NIWA merged with GNS Science to become Earth Sciences New Zealand.
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Often all you will see of a kākahi is their siphons poking out of the sediment [Photo: Tracey Burton, NIWA]
![Often all you will see of a kākahi is their siphons poking out of the sediment [Photo: Tracey Burton, NIWA]](/sites/default/files/WEB-Kakahi-in-lake-Brunner2.jpg)
