Identified as Clypeaster australasiae (Gray, 1851) by Dr Alan N. Baker but name doesn't seem to be available on NatureWatch. Depth 20 m. As you can see they were quite abundant at this site ('Sand Garden').
About
Help
Forum
Jobs
Our Blog
Community Guidelines
Terms of Use
Privacy
Take iNaturalist NZ mobile with the iNaturalist mobile app:
Help us grow with Givealittle