Wildlife photography of an Alaskan Brown Bear running through Moraine Creek fishing for salmon in Alaska’s Katmai National Park

An Alaskan Brown Bear surges through the waters of Moraine Creek in anticipation of a delicious salmon during a spawning run in Alaska’s Katmai National Park. Grizzlies follow the food, and salmon is their favorite. Salmon are the very heart of Alaskan riverine ecosystems. Their mysterious signal to spawn drives them from the sea to swim upstream through rivers and streams leading to the waters of their birth. Bears eat only the best parts of the fish, tossing the rest aside, which feeds trout, birds, smaller mammals, and eventually even microorganisms.