Now that's funny, the joke that is.

I've never heard of the theory in regards to only a small percentage of Sea Lions chase Salmon up the rivers, but I wouldn't doubt it. The rest of them I'm sure catch theirs in the ocean. We do have a hecka of alot of resident Sea Lions that make the lower columbia home though. They're so thick now during Springer season you almost beg not to hook up when ya see them cruising the flats. They know an easy meal when they see it.