Our bioblitzes are powered by iNaturalist, our in-house, citizen science platform. 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.
Getting a close-up look at an insect during a bioblitz
Exploring Lake Merritt in Oakland
Documenting organisms on the docks of San Francisco Bay
Looking for birds at a bioblitz in San Francisco
Documenting a newt during a bioblitz
Bioblitzes are gatherings of scientists, citizen scientists, land managers, and more, all working together to find and identify as many different species as possible. Bioblitzes not only help land managers build a species list and atlas for their park and provide invaluable data for researchers, they also highlight the incredible biodiversity in these Bay Area oases.
Our bioblitzes are open to anyone and are family-friendly. Just bring your smartphone with the iNaturalist app, your curiosity, and your powers of observation to help catalog the natural wonders of our parks and open spaces.
Check below to find out about upcoming grassroots bioblitzes. Links will be live once the bioblitz is open for registration. Registration is free, but be sure to let us know you're coming so we can send you all the information you need prior to the bioblitz!
The City Nature Challenge is back! We had such a great time last year with San Francisco vs Los Angeles that we're doing it again - but this time with cities across the United States joining in! There are 16 cities from Seattle to Miami, from LA to NYC, from Chicago to Houston, all taking part in City Nature Challenge 2017!
In celebration of national Citizen Science Day and in support of the City Nature Challenge, join the California Academy of Sciences and Marin Country Day School in a bioblitz of Ring Mountain! The unique geology and microclimate of this location provide a home for a number of rare plants. The ridge contains serpentine soils,with isolated populations of rare plants. The most extreme example of this phenomenon is the Tiburon Mariposa Lily, which is found on the upper slopes of Ring Mountain, and nowhere else on earth.
In support of the City Nature Challenge and in celebration of National Citizen Science Day, Sequoia Audubon Society invites you to join San Mateo County's top iNaturalist enthusiasts for a morning at Edgewood County Park. Spend Saturday morning documenting all of the plants and flowers, insects including butterflies, herps, birds and other animals we can find. Be sure to download iNaturalist before arriving and bring a fully charged smart phone or camera.
Join Nature in the City as they celebrate one of San Francisco's iconic butterfly species - the Green Hairstreak - in the corridor it flies along! There will be games, activities, nature hikes, and our friends from Nerds for Nature will be leading a bioblitz of the area, giving you a chance to contribute to the City Nature Challenge by making iNaturalist observations at Hawk Hill Park, Grandview Park, and throughout the corridor!
Join Marin Municipal Water District and participate in the City Nature Challenge 2017 by attending this group event around Lake Lagunitas. Head out with MMWD staff to see how many species you can find and how many observations you can make! Details: Meet at 1pm sharp at the Lake Lagunitas parking lot to join a group. Don't forget to download the iNaturalist app beforehand.
Radio Beach is really a unique spot in Oakland - as Andrew Alden says in his fantastic blog Oakland Geology, “Radio Beach is Oakland’s nearest thing to a natural beach… There is no lonelier or prettier spot on Oakland’s waterfront.”
Ever wonder what critters lurk beneath the surface of the waters around Jack London Square in Oakland, CA? Here’s your chance to see them and to learn about the weird creatures that live right under our feet.
Polychaete worm from Jack London Square photo by Ken-ichi Ueda
Join the National Park Service and One Tam at scenic Homestead Valley as we try to identify and document every living species we see! Hone your naturalist skills, learn to use the iNaturalist smartphone app, and contribute valuable data about Mt. Tam's biodiversity. We will be exploring coastal prairie and forested ridges to look for rare species and weeds alike!
Join staff from the UCSC Natural Reserves, Ken Norris Center for Natural History, the California Academy of Sciences, legions of enthusiastic UCSC students & alumni, and members of the Santa Cruz community as we come together for a full day exploring and documenting this campus's incredible biodiversity. UCSC's wide variety of habitats and unique geophysical setting have resulted in a great number of species that call campus home. Younger Lagoon Reserve, on the marine science campus at Long Marine Lab, will concurrently host a bioblitz from 9 am-12 pm.
Join staff from the UCSC Natural Reserves, Ken Norris Center for Natural History, the California Academy of Sciences, legions of enthusiastic UCSC students & alumni, and members of the Santa Cruz community as we come together for a morning exploring and documenting Younger Lagoon Reserve's incredible biodiversity. One of the few relatively undisturbed wetlands remaining on the California Central Coast, the Reserve encompasses a remnant Y-shaped lagoon. The lagoon system provides protected habitat for 100 resident and migratory bird species. The Campus Natural Reserve will concurrently host a bioblitz from 9 am-12 pm.
UC Santa Cruz Fort Ord Natural Reserve is a UCNRS site in Marina, CA, focusing on research, teaching, and public service. They work with students from local schools as well as researchers from all over to learn and teach about our wonderful local habitat. Through the bioblitz, we hope to grow the reserve species lists, but most importantly celebrate our fellow creatures and each other.
Photo from fortordcleanup.com
Help collect data for ongoing Academy research from home or in the field—it's fun, easy, and helps scientists answer big questions.