Photograph by David Braun
Volunteers at the 2009 Indiana Dunes National Lakeshore BioBlitz turned up more than 1,200 species (download a PDF list here).
Get a bird's-eye view of the social updates from the 2014 BioBlitz.
See highlights from the BioBlitz at Jean Lafitte National Historic Park and Preserve.
See photos of what happened when more than 5,000 people participated in a 24-hour species count in Rocky Mountain National Park.