Participate in the 2025 City Nature Challenge in San Luis Obispo County from April 25 to 28! This international four-day bioblitz inspires communities worldwide to document local biodiversity at the end of April each year. Upload observations of any life or evidence of life—including photos or audio—from anywhere in the county during the project dates to have them included in this project. You can participate by submitting observations on your own anytime from April 25 through 28 or by joining us on one of several guided/organized hikes. Observations can be made anywhere in SLO County, including downtown or on your street.
Our iNaturalist project is titled City Nature Challenge 2025: San Luis Obispo County. Check the Project Journal on iNaturalist for details about guided/organized hikes. You can also help identify observations on April 29–May 4, following the observation period. This is a family-friendly community science event - people of all ages and abilities are welcome to participate in City Nature Challenge.