In May 2022, divers removed almost 10,000 Kina from four sites in the Marlborough sounds.
No, they weren't feeling particularly peckish that day. It's actually a project - led by University of Auckland PHD student Dallas Lafont - to study the impact Kina are having on our marine ecosystem.
To tell us more about why the Kina population is out of control, and the impact it's having, Dallas speaks to Mark.