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South Florida

The City Nature Challenge is an international effort for people to find and document plants and wildlife in cities across the globe. It’s a bioblitz-style competition rooted in citizen science where cities are in a contest against each other to see who can make the most observations of nature, who can find the most species, and who can engage the most people. ​We are competing globally as South Florida, which encompasses Palm Beach, Broward, Miami-Dade, and Monroe Counties. Explore and document our unique environments, both terrestrial and marine, where diverse flora and fauna can be found just outside your door #CNCSoFlo

Thank you for making CNC 2024 such a success! Stay tuned for CNC 2025 news! 


Weekend 1

Bioblitz Weekend

The first weekend is all about wildlife observations! Any observations made within our SoFlo boundary during weekend one will contribute to our efforts in the City Nature Challenge! Participation occurs through an app called iNaturalist, where you can take and upload pictures of flora, fauna, and fungi. When you upload your photo, identify the species to the best of your ability. If in doubt, leave it unidentified. Because weekend two . . .

Weekend 2

Identification period

. . . is all about identification! Connect in person or virtually with your SoFlo peers to best identify species observed in your area. Are you familiar with South Florida species? Hop on iNaturalist and help identify local observations! Make sure to check back on your own observations, as your peers confirm your identifications and might suggest alternatives.

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Win the challenge:


CNCsoflo is competing with 500+ cities all over the world in three different categories:

  1. Most observations​​
  2. Most participants
  3. Biodiversity observed

Citizen Science

"Citizen science uses the collective strength of communities and the public to identify research questions, collect and analyze data, interpret results, make new discoveries, and develop technologies and applications – all to understand and solve environmental problems."



Photo credit: Nic Brunk

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