Salmon have been swimming in Pacific Northwest waters for at least 7 million years, as indicated by fossils of large saber-tooth salmon found in the area. During that time, they've been a key species in intricate, interconnected coastal ecosystems, bringing nitrogen and other nutrients from the ocean and up streams and rivers to spawning grounds, feeding whales, bears and eagles and fertilizing the magnificent coastal rainforests along the way. Salmon have been swimming in Pacific Northwest waters for at least seven million years.iStock For as long as people have lived in the area, salmon have been an important food source and have helped shape cultural identities. But something is happening ...
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