No I think it did happen, I heard Rush talk about it on the radio the day after it happened. Although my evidence is hearsay I don't think he would have repeated the story unless it was verified.Nope, Rebelbase is right. Snopes.com lists the seal/killer whale event as a fake news story. Though it didn't happen, it does have the ring of truth, doesn't it?!
I heard Rush mention it way back when the Exxon Valdez clean-up was happening.