From April 27 - 30, over 60 cities around the world are competing to see who can document the most diversity in the natural world using the iNaturalist app. 

Join us at Lake Lagunitas on Saturday, April 28 from 10 a.m. - 2 p.m. for guided excursions, iNaturalist "how-to's" and independent identification sessions. 

You must download the iNaturalist app, create an account, and join the San Francisco Bay Area project to participate in the challenge. For instructions on how to make observations using your iNaturalist app on your iPhone or Android phone, visit the iNaturalist website.