Where do salmon migrate to?
Salmon migrate in order to reproduce. Salmon live most of their
lives in the ocean, but reproduce in rivers. Spawning time depends
on the location. When it is time to spawn, the fish swim upriver.
Many are caught by predators such as bears and humans. When the
salmon reach the spawning grounds, they will mate, lay eggs, and
die. After the eggs hatch, the young will swim downriver to the
sea. The Copper River in Alaska is famous for salmon. Here is a
more detailed article on salmon spawning.
http://animals.howstuffworks.com/fish/salmon-info3.htm