On a gloomy Saturday morning in Pacific Beach, Friends of Rose Creek executive director Karin Zirk awaited participants for the California Biodiversity Day BioBlitz. As locals trickled in, the Sept. 13 morning’s activities got underway, with cameras out, snapping images of birds and plants. … With participants hailing from Pacific Beach and across San Diego County, Friends of Rose Creek’s primary goal is to connect those involved with the natural environment and inform the public on the importance of clean water systems. … Using the mobile app iNaturalist, participants snapped images of birds, plants, trees and shrubs along the salt marsh section of the creek and uploaded them to the app.