S2 E1202/03/18

The Surprise Salmon
Also available on the NBC app

Host Dylan Dreyer journeys to the most active volcanoes of Alaska to explore a population of salmon unlike any other on Earth. Scientists have only just begun to piece together what might have happened nearly 2,000 years ago.

Available until 10/07/18
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S2 E1220 minTV-GFull EpisodeFamily and KidsDaytime