Shooting Sealions to protect Salmon?

In Portland Oregon fisherman are shooting sealions because they are taking their fish on the Columbia River. Sealions are protected under the law, but these fisherman are mad. You see the Sealions are taking the fish that the fisherman have already caught. Sealions love the spawned salmon during the spring. Fisherman want to be able to shoot these troublesome sealions. I don't think they should because they are probably hungry too, and if the salmon is deminishing there is a bigger problem than the sealions. Animals are getting hungry too because our food cycle is changing.