Based on data from citizen science surveys and research findings, WWF has formulated clam gauges to serve as reference for the public. As an interim measure before clam-digging activity is officially managed, WWF recommends that clam diggers not collect clams smaller than the clam gauge. Give clams a chance to reproduce and let the small ones grow!
Principles behind clam gauge design
- Based on literature reviews to understand the relationship between sizes and maturity for different clam species; the suggested clam gauge size is the size of over half of the individuals of that species deemed mature
- Takes reference from the statutory minimum size of catches of the same species in other regions
- Based on a comparison of data obtained from WWF citizen science ecological surveys, to ensure the designated sizes on the clam gauges are applicable to local shores
- In the long term, clam gauges will be reviewed regularly to accommodate for any changes in the status of the local clam community.