California’s commercial salmon fishing season opened Friday for the coast south of the Bay Area with high expectations for a record-setting catch. But, have you ever wondered how adult salmon manage to find their way back to the river where they were spawned when it’s time for them to spawn themselves? Scientists think they may have found the answer: “The fish have tiny magnets in their flesh that allow them to use the Earth’s magnetic field as both a map and a compass.”

 

 

 

Read full story on: SacBee