Anecdata.org (often shortened to Anecdata) is a citizen science web portal developed by the Community Environmental Health Lab at the MDI Biological Laboratory in Bar Harbor, Maine. Anecdata.org supports projects in the collection of observational data, primarily in environmental science, biology, and public health. Anecdata was founded in 2014 to provide a data management system for the citizen science projects run by the Community Environmental Health Lab and has since expanded to include more than 200 projects, where more than 8,000 registered users have contributed over 30,000 images and more than 50,000 observations. In addition to the desktop site, there is a corresponding mobile app that can be used to submit observations to existing projects. Anecdata.org also acts as a data reposi