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14 of the greatest animal migrations

By: Bryan Nelson on Sept. 27, 2010, 9 a.m.

Photo: OVasik/iStockphoto

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One of nature's most impressive migratory animals is the salmon. They are impressive for their ability to traverse both seawater and freshwater during their journey.

Salmon are capable of traveling hundreds of miles inland via rivers and waterways, and will even ascend thousands of feet up mountain streams to return to the waters where they were born.