salmon runs

Salmon runs refer to the annual migration of salmon from the ocean back to their freshwater birthplace to spawn. After spending years in the ocean, they migrate upstream through rivers and streams, often overcoming obstacles like waterfalls and dams, to reach their natal spawning grounds. During this journey, they undergo physical changes, such as developing brighter colors and hooked jaws. Once they lay their eggs and fertilize them, most salmon die. This cycle is vital for maintaining healthy ecosystems, supporting wildlife, and sustaining commercial and recreational fisheries.