In streams winding through Alaska's Tongass National Forest, the largest national forest in the United States, the salmon are running. They do this every year: the adult fish struggle upstream, sometimes hundreds of kilometers from the ocean. They are going back to the freshwater streambeds where they hatched years earlier. There they will mate, lay their own eggs and die. Watch the Migration Show Live Every year, the U.S. Forest Service puts a camera in the water ...
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