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The salmon is a family of fish native to the Atlantic and Pacific Oceans, as well as the Great Lakes. Salmon have a very distinct life-cycle. They are born in fresh water rivers and streams, migrate to the ocean, then return to fresh water to reproduce. Salmon will actually return to the spot where they were born to spawn. This is a great challenge for the salmon since it must swim upstream, often jumping up waterfalls, to return to their place of birth. Salmon are a very popular food. They are also popular for sport fishing. Salmon populations are declining due to overfishing, polution and environmental issues. Play the following videos to learn more about the salmon.