Salmon

The salmon is a fish famous for its long migrations between rivers and the ocean. Most salmon species are born in freshwater rivers, then travel to the sea where they grow before returning to their place of birth to reproduce. This journey, which can cover hundreds or even thousands of kilometers depending on the species, requires great endurance.

Salmon use their sense of smell to find their way back to familiar streams. Their bodies also undergo changes during migration, including adjustments in color and physiology to adapt from saltwater to freshwater environments. Salmon are important members of aquatic ecosystems because they transport nutrients from the ocean back into rivers when they reproduce.

They provide food for many animals, including bears, birds, and other fish. Their diet varies during their life cycle and may include small aquatic organisms, insects, and other fish. Several salmon species are also highly valued by humans and are raised in aquaculture farms.

However, wild salmon populations can be affected by obstacles such as dams, habitat loss, pollution, and changes in water temperature. Protecting rivers and marine environments is essential for their survival.