Dear colleagues, We are pleased to inform you of the following new scientific publication on humpback whale song. Au, W. W. L, Pack, A. A., Lammers, M. O., Herman, L. M., Deakos, M. H., & Andrews, K. (2006). Acoustic properties of humpback whale songs. Journal of the Acoustical Society of America, 120, 1103-1110. Pdfs are available from Adam Pack: email: pack@hawaii.edu. Thank you for your kind attention. Adam A. Pack, Ph.D. The Dolphin Institute 420 Ward Ave, Suite 212 Honolulu, HI 96814, USA (808)-679-3690 (808)-593-2211 email: pack@hawaii.edu