Please note: Unseen Oceans will open at 12 noon on Wed., June 18.
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Join us for California Biodiversity Day, celebrated all week long from September 6 - 14, 2025!
As a global biodiversity hotspot, California has an immense array of nature to explore. We've compiled a few resources to guide folks in learning more about the nature around them, while contributing valuable data that can be used to answer important local conservation questions.
Help celebrate California's biodiversity and help inform the state's 30x30 initiative by taking a closer look at nearby nature and documenting your finds on iNaturalist! Explore the nature around you however you choose, whether that's visiting the coast, enjoying a long hike, walking to a nearby park, observing the birds outside your window, or looking for spiders under your couch.
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Join the "Find 30 Species for CA Biodiversity Day 2025" Project
September 6–14, 2025 the California Natural Resources Agency is putting forth a challenge for California Biodiversity Week: can you find and document 30 species in California?
Participating is easy!
- Download the iNaturalist app and make an account.
- Join the “Find 30 Species for CA Biodiversity Day 2025” project (look in the upper right corner of the "About" section for the Join button).
- September 7–15, find and photograph 30+ wild plants, animals, and fungus anywhere in California.
- Learn more as your observations are identified!
By joining the project, any observations you make in California from September 6 to 14 will then be added to the project and will help inform the California 30x30 initiative!
Make observations in your neighborhood, in your local park, while out hiking… or join in one of the many events being held throughout California during the full week of celebration for California Biodiversity Day!
Spread the word! Use the hashtag on social media #CABiodiversityDay
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Other ways to experience California's biodiversity
- There are events and activities being held around the state for California Biodiversity Day! Check out the California Biodiversity Day website to find a bioblitz to participate in, a talk to attend, or a nature walk to join!
- Try to get bingo with these California Biodiversity Bingo sheets you can download and play with your family, friends, and community!
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A colorful new exhibition reveals the surprising ways people, places, and species are connected in California.
Why is it important to listen to Indigenous voices as we regenerate the natural world?
We aim to regenerate biodiversity, build climate resilience, and advance equitable access to nature statewide.
Join iNaturalist
The work we do utilizes iNaturalist to make biodiversity observations while building community around nature. It's a community-powered website and app that makes it easy to upload and share your observations in the field and to get help from other users with flora and fauna IDs.
Contact us
Have questions about our community science programs? Want to get involved? Email us at communityscience@calacademy.org.