TWENTY YEAR REPORT *Living Document*

Our BeachCOMBERS Report summarizes twenty years of survey data collected by our dedicated group of citizen scientists. The short report describes trends in oiling, seabirds, and marine mammal deposition between 1997 - 2017. We created a "working document" that contains links to supplemental chapters, peer-reviewed publications, and articles created from the 20-year data set from program managers and collaborators. Periodical updates to the report and supplemental material will be made as they become available.