Do all Pacific Salmon die after spawning or do some return in subsequent years? How about the Steelhead?
All Pacific Salmon die after they spawn.The bodily functions of the Pacific Salmon shut down just prior to entering freshwater. The fish cease to feed and stress of spawning causes their body basically to consume itself. Steelhead have the ability to return to the ocean and come back to spawn several times, although only a smal percentage will return to spawn a second time.