1M views · 20K reactions | Every year, Pacific salmon swim hundreds...

3 minutes of relaxation watching Sockeye Salmon (Oncorhynchus nerka) swim upstream during our recent visit to Alaska with researchers from the Alaska Salmon Program - FRI. Thousands of fish congregate at the mouth, waiting for the right moment to navigate the final shallow stretch up the stream. Scientists think they use the distinct smell of the outgoing water to find their way back and various cues to decide when to leave the lake. Every few minutes, a fish will attempt to make it up over the