A little problem there as Sea Lions are a protected species and they are multiplying bigtime. google "astoria sea lions" to see what happens then (we go down there to visit and its always interesting to look at all the docks that have been taken over by sea lions). I think I saw, however, that the Indians have been given the ok to kill a some of them.
Sea Lions eat between 15 and 35 pounds of salmon every day. Its interesting. Years ago it used to be that when a fisherman saw a sea lion they killed it. One would think that might cut the population back - nope, never happened.