Registration for the 7th International Workshop on Detection, Classification, Localization, and Density Estimation (DCLDE) of Marine Mammals Using Passive Acoustics that will take place from July 13 to 16, 2015 in La Jolla, California will close on *Monday June 15*. The full schedule for the workshop is posted on line ( http://cetus.ucsd.edu/dclde/schedule.html). If you plan on attending, please register via the 2015 DCLDE website prior to the deadline: http://cetus.ucsd.edu/dclde/register.html. Also note that the deadline to book rooms at a local hotel with special conference rate is June 20. For any questions or concerns, please send us an e-mail at dclde2015@gmail.com We look forward to welcoming you in La Jolla in July! DCLDE 2015 Organizing Committee