Fri.–Mon., April 26–2
Various Presidio locations
Enjoy a variety of adventures as part of an annual worldwide event for citizen scientists to make observations of “nature where they live.” Team with experienced naturalists to take scientific explorations and help record wild plants and animals using the free iNaturalist app. Last year, the Presidio helped S.F. win the challenge. Visit website for details. All ages. Free. Some activities require registration.
415-561-4323, presidio.gov
