This video from Nature follows endangered sockeye salmon as they travel to their Idaho spawning grounds. Once the salmon reach their destination, many are captured and brought to a local fish hatchery. In the hatchery, biologists manage the reproduction of the salmon in an effort to boost their numbers. Biologists take such drastic measures because between 1985 and 2007, only a dangerously low number of sockeye salmon made it to Idaho each year. After a year in the hatchery, the young salmon are released into the wild.
This video is available in both English and Spanish audio, along with corresponding closed captions.
Learn more about the Nature film Salmon:Running the Gauntlet.