Salmo salar, commonly known as the Atlantic salmon, is a species of fish found in the North Atlantic Ocean and its tributaries. This fish is known for its remarkable life cycle, which includes migrating from freshwater rivers to the ocean and back again to spawn. Atlantic salmon are anadromous, meaning they live in both saltwater and freshwater environments during different life stages. These fish are characterized by their silvery bodies with a slightly darker back and small black spots. They are an important species for both commercial and recreational fishing, contributing significantly to the economy in regions like North America and Europe. Conservation efforts are in place to protect their habitats and ensure sustainable populations.