Thank you to everyone who participated in the 2026 City Nature Challenge! This 4-day, worldwide collaboration to get people observing the natural world through photography, was a huge success! On behalf of The Nat, the SDSU Biodiversity Museum, and the UC San Diego Natural Reserve System, we share our gratitude to everyone who made observations, helped with identifications, hosted bioblitz events, and attended community iNaturalist gatherings.
Together this year, we achieved:
You can check out the global results here. This is a huge accomplishment for San Diego County, and we hope you will join us next year from April 23-25, 2027, for another round of observing, identifying, and contributing to our understanding of biodiversity together!
This county-wide effort is possible because of our dedicated partners. Interested in joining?
Educators—want to incorporate the City Nature Challenge into your curriculum? We've got your back.
City Nature Challenge exists thanks to its founding organizations, the California Academy of Sciences and the Natural History Museum of Los Angeles County, and thanks to support from people like you.