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Jun 17, 2019, 12:23 pm172 pts
EcoWatch
By Alisa Opar For Chinook salmon, the urge to return home and spawn isn't just strong — it's imperative. And for the first time in more than 65 years, at least 23 fish that migrated as juveniles from California's San Joaquin River and into the Pacific Ocean have heeded that call and returned as adults during…
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