[MARMAM] orca predation on other whales

Dear Marmamers, I am looking for articles, data and observations of killer whales attacking other whales and/or eating whale carcasses. In the summer of 2008, while engaged in killer whale research for North Gulf Oceanic Society, we observed killer whales attacking adult humpback whales and later feeding on carcasses. I am collecting articles as background/research for a paper on this event and have attained the items one can access for free on the web. If you have other relevant data, or wish to discuss such incidents please contact la@otterworks.biz (If you responded to this request earlier, your correspondence was lost due to a computer backup problem - please resend.) Thank you, L.A. Holmes