Katmai National Park, AK

Every summer in Alaska, one of nature’s most dramatic cycles unfolds.

Millions of salmon return from the ocean to the rivers where they were born, pushing upstream through powerful currents and waterfalls in an incredible journey to spawn. Along these rivers, the salmon run becomes a feeding frenzy for the wildlife that depends on it.

For Alaska’s brown bears, this brief season is critical. The fish provide the high-energy nutrition they need to build fat reserves for the long winter ahead. At waterfalls and narrow river channels, the bears wait patiently, watching for the moment when salmon leap from the rushing water.

In seconds, instinct and timing take over.

The salmon run is more than a spectacle — it’s the heartbeat of Alaska’s ecosystem, sustaining bears, eagles, forests, and rivers alike.

Here, predator and prey are part of a cycle that has been repeating for thousands of years.