Typically, now is the time when creeks along the Sacramento River are filled with young spring-run Chinook salmon preparing to make their journey downstream to the Pacific Ocean, where they will mature, and eventually make their return to California spawning sites. This year, however, the salmon population has plummeted alarmingly — what officials call a “cohort collapse” — and biologists are taking urgent measures to save them from extinction. For the first time, biologists with the California Department of Fish and Wildlife and the National Oceanic and Atmospheric Administration have begun capturing the juvenile spring-run salmon so that they can breed them in captivity, and hopefully prevent them from disappearing from the wild.

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