Dear Colleagues, I am researching notes, articles, and personal observations involving killer whale predation on other whales, particularly humpback whales. This study of the literature follows recent observations of killer whale interaction with humpbacks in Cook Inlet (Alaska) and is part of on-going research of North Gulf Oceanic Society. I have access to Marine Mammal Science articles and free on-line materials; If you have other references or knowledge to contribute on the subject, please be in touch. Regards, LA Holmes