City Nature Challenge 2025
April 28, 2025 - 12:00 AM to 11:59 PM
City Nature Challenge San Diego County
Join us April 25-28, 2025
The 2025 City Nature Challenge is a 4-day, worldwide collaboration to get people observing the natural world through photography—and The Nat and SDSU Biodiversity Museum are coordinating San Diego’s annual participation! We’re using the free iNaturalist app and iNaturalist.org website to tally results for observations made in San Diego County. All wild plants and animals count, even non-native species. The City Nature Challenge will take place April 25–28, 2025.
How to participate in City Nature Challenge
It’s easy! You can go out on your own, join our partners at one of the many special events hosted remotely and around town, or find an event near you. All you have to do is:
- Download the free iNaturalist app to your Android or iPhone
- Join the City Nature Challenge 2025: San Diego County iNaturalist project
- Take photos of wild plants and animals in San Diego County from April 25–28
- Upload your photos to iNaturalist by May 4.
- Learn more as the iNaturalist community helps identify your observations.
- Watch the video, then come to Rose Creek and starting making observations.