Absolutely.
There are a few ongoing projects for removal of seals and sea lions in particular localities in the United States where there are already impediments to salmon and steelhead migration. They're often around hydro dams. What they see quite often is that you'll get to a point where a lot of fish are holding at the bottom of a hydro dam and all of a sudden a sea lion shows up. That sea lion will set up shop in that vicinity for as long as they see fit. They will then go in and remove seals or sea lions that are within certain areas, particularly around hydro dams but there are other places.