Aquarianna
Registered
There are three genetically-distinct races; or sub-species of orca: resident, transient and offshore orcas. I copied this stuff from Wikipedia and made the most important bits bold
Aw man, you beat me to the punch!
Residents know where the fish are, so that's what they eat, while the transients go after pretty much whatever they can find. I worked on a day cruise boat in Ak a few summers ago, and you could definitely tell who was who...
Don't know where this video was shot, but it gives you a good perspective:
http://video.google.com/videoplay?docid=-1268286721558989350&q=orca+hunting+video
I really would hate to be on the receiving end of that