Dear Colleagues, I am pleased to announce that the following article is now available online. There is no abstract because it is in note form. Holt, M. M., Noren, D. P. and Emmons, C. K. (2012), An investigation of sound use and behavior in a killer whale (*Orcinus orca*) population to inform passive acoustic monitoring studies. Marine Mammal Science. doi: 10.1111/j.1748-7692.2012.00599.x The publication is available online at: http://onlinelibrary.wiley.com/doi/10.1111/j.1748-7692.2012.00599.x/full -- __________________________________ Marla M. Holt, Ph.D. Research Wildlife Biologist Marine Mammal & Seabird Ecology Team Conservation Biology Division NOAA/NMFS Northwest Fisheries Science Center 2725 Montlake Blvd East Seattle, WA 98112 Phone: 206.860.3261 Fax: 206.860.3475 www.nwfsc.noaa.gov/research/divisions/cbd/marine_mammal/marinemammal.cfm <http://www.nwfsc.noaa.gov/research/divisions/cbd/marine_mammal/marinemammal.cfm>