Developed by Toronto Zoo and Fisheries and Oceans Canada, Clam Counter is a fun, user-friendly app supporting both beginners and experienced biologists who wish to contribute to freshwater mussel conservation in Canada.

For Beginners:

Have you seen a mussel at your cottage or home, or while out for a walk by the water? If so, we’d like to know about it! Complete a short six-step survey to report your sightings and advance through the stages of mussel growth.

For Experts:

Use Clam Counter like a field guide. The species list, photos and detailed key will help you identify freshwater mussels in the field, and you can also report mussel sightings.

Your submissions support many organizations working to protect Canada’s freshwater mussels including: Toronto Zoo, Fisheries and Oceans Canada, Ministry of Natural Resources and Forestry, Rouge Park, Ontario Streams, Toronto and Region Conservation Authority, and many more.

What’s New

Version 1.74

- Fixed an issue with the maps and dark mode

Ratings and Reviews

5.0 out of 5
1 Rating

1 Rating

App Privacy

The developer, Evelyn Liu, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Linked to You

The following data may be collected but it is not linked to your identity:

  • Location
  • Contact Info

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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