Our Register of Largest NZ Shells records the largest shells of any NZ species in the possession of collectors worldwide.
It is also used to record any known sinistral specimens of NZ species.
Information on how to register your shells, as well as measurement rules etc. are contained in the register.
The register is in Excel format, but if you don't have Excel then you can download a free Excel Viewer.
For more information, email aucklandshellclub@gmail.com.