The Fifth International Workshop on Detection, Classification, Localization, and Density Estimation of Marine Mammals using Passive Acoustics and associated tutorial introductions to Detection, Classification, and Localization and Density Estimation Aug. 21-25, 2011 Mt. Hood, Oregon, USA The web site for the workshop and tutorials is now complete, and workshop abstracts and requests for student support are now being accepted: http://www.bioacoustics.us/dcl.html Also, as announced previously, the dataset for the workshop is available on MobySound.org via links at the above website. We invite you to visit! - The DCLDE Organizing Committee