Monumental Questions - What is iNaturalist?

Kristie Ehrhardt • April 9, 2026

Have you ever been hiking in the Berryessa Snow Mountain National Monument (or almost anywhere else in the world for that matter) and come across a plant or animal and not been able to identify it? Have you ever thought, “hmmm, if only there was an easily accessible phone app that could help me identify this thing nearly instantly?” If that exact thought wandered through your cranium; boy, oh boy are you in luck! Enter iNaturalist! 


The iNaturalist app is primarily an online social community sharing their findings and information to network and help others learn about the environment. The iNaturalist website states that “INaturalist is crowdsourced species identification system and an organism occurrence recording tool. You can use it to record your own observations, get help with identifications, collaborate with others to collect this kind of information for a common purpose, or access the observational data collected by other iNaturalist users.” 


 iNaturaist was developed as a Master’s final project by Ken-ichi Ueda, Nate Agrin and Jessica Kline at UC Berkeley’s School of Information back in 2005; the same year that YouTube and Reddit were initially introduced to the public - a vintage year for social media developments! It officially launched in 2008 and work continued on the site and iNaturalist, LLC was born in 2011. By 2017 National Geographic was onboard and in 2023, what began as a student project became an independent nonprofit organization that grew into a globally recognized Citizen Science driven platform that connects millions of people to the biodiversity around them. iNaturalist is a compilation database that contributes valuable collective intelligence to conservation and science from around the world. iNaturalist is a valuable tool for species identification as well as organism occurrence  crowdsourced information, it is also a practical resource for species identification and distribution. And guess what else! It’s free to use.


Sound good? Want to know how you can benefit from iNaturalist? 

You can use iNaturalist to record your own species observations and locations. You can use it to help identify species you aren’t sure about or may be new to by using other individuals' entries. You can even work with other users to collaborate and continue to add information to the site or you can access other’s information regarding species observations and occurrences. You can look up and enter data using scientific nomenclature or common names. You can look at other’s photos and locations for reference and contribute your observations. Students and Professors alike are using and recommending iNaturalist. 


So how’s it been going? On March 20, 2008, the very first entry was made into iNaturalist. To save you from doing the math I’ll tell you that iNaturalist just had its 18th birthday! Guess how many observations people have recorded in those 18 years… you’ll never guess so I’ll just tell you - iNaturalist has over 3.5 million individual observations! And it’s increasing every moment, you can literally watch the counter on their homepage rise. Guess how many individual species have been recorded! Not to be disparaging but you’ll never get it...iNaturalist is up to just under 560,000 species! There are currently over four million registered individuals making and recording observations and more than 483,000 people helping other people by making identifications. In just 18 years, a student project has grown into a globally recognized and respected tool to make and record species observations adding information to a world-wide biodiversity database. If you want to be a part of this community simply download the iNaturalist app or go to their website and get out there and start entering your observations. The Berryessa Snow Mountain National Monument region is an incredible place to practice using iNaturalist because it hosts such a huge diversity of habitats and species. 

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