Auntym,

There is no longer any high seas interception of salmonoid stocks. There are harvests of Washington salmon on the inshore ocean waters of SE Alaska, British Columbia and Wa. state by commercial trollers and sportfishermen. The sports catch exceeds the commercial ocean harvest of chinook and coho. There is virtually no interception of winter run steelhead anywhere except the rivers.
Adult returns are primarily influenced by stream and ocean survival rates which biologists cannot accurately predict.
Pristine spawning streams and and an adequate return of spawning adults will perpetuate or rebuild runs of both salmon and steelhead. Will that ever happen; probably not.