Join host David Hale as he explores one of nature's most incredible migration stories in this episode of Migration. Discover how Pacific salmon navigate thousands of miles through ocean currents before returning to their exact birthplace to spawn, using sophisticated biological GPS systems that scientists are still working to understand. Learn about the extraordinary physical challenges these fish overcome, from adapting their bodies from saltwater to freshwater environments to leaping up waterfalls and rapids that would challenge human athletes. Explore the deep cultural significance of salmon runs for Pacific Northwest indigenous peoples, who have observed and celebrated these migrations for thousands of years. Understand the crucial ecological role salmon play as they transfer marine nutrients to inland forest ecosystems, supporting everything from towering cedar trees to bears and eagles. Examine how climate change and human development are affecting ancient migration patterns, and discover the remarkable ways salmon populations are adapting to new challenges. This episode reveals how salmon migration represents far more than simple animal movement - it's a story of sacrifice, determination, and the continuation of life itself across generations.