City Nature Challenge 2025
The City Nature Challenge is a 4-day BioBlitz run every year across the globe.
The purpose of this event is to encourage people to engage with the natural environment that surrounds us all, and at the same time produce valuable observation records of species that can be used by scientists in their research.
The City Nature Challenge 2025 will take place from Friday April 25th through to Monday May 28th.
Any observations uploaded to iNaturalist during the 4 day observation window count toward the BioBlitz totals. Contribute observations from your local participating cities to help show off the biodiversity the region has to offer.
Log into iNaturalist and join the associated projects to show your support. See the participating areas in South Australia below:
City Nature Challenge 2025 Global Project
City Nature Challenge 2025 – Greater Adelaide
Epistemic Curiosity 