The abstract submission deadline for the 3rd International Workshop on Detection and Classification of Marine Mammals Using Passive Acoustics (Boston, MA USA 24-26 July 2007) has been extended to 16 April 2007. Notification of acceptance will go out on 30 April 2007. Please see website at www.rightwhaleweb.org/workshop for specific workshop details. Thank you. Heather Pettis New England Aquarium Central Wharf Boston, MA 02110