Every year, American grizzly bears depend for their survival on a massive natural event: the return of millions of salmon to their place of birth in their attempt to spawn the next generation of fish who will perpetuate this biological ritual. The salmon must swim upstread, and the bears know it...Make sure you click on the HD button as soon as the videos start playing to watch them in great and absolutely beautiful quality as David Attenborough narrates.
Salmon may have it rough, but that's a picnic compared to the dangers that sardines face: predatory dolphins, seals, sharks and gannets (missile birds)... coming at them from every direction, all at once!
I wonder if the survivers suffer from post-traumatic stress disorder :)
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