The 7th International Workshop on Detection, Classification, Localization and Density Estimation (DCLDE) of Marine Mammals using Passive Acoustics will be held July 13-16, 2015 at Scripps Institution of Oceanography in La Jolla, California. We are pleased to announce that detailed information on the meeting can be found at: http://www.cetus.ucsd.edu/dclde/index.html The DCLDE 2015 Workshop Dataset is now available. A description of the data can be found at: http://www.cetus.ucsd.edu/dclde/datasetDocumentation.html and access to the data at: http://www.cetus.ucsd.edu/dclde/dataset.html We anticipate that meeting registration will open around March 1. John Hildebrand, Simone Baumann-Pickering, Ana Sirovic and Marie Roch DCLDE 2015 Organizing Committee