It can take a sockeye salmon up to seven years to become fully mature. The fish then makes the hazardous journey back to the river where it was born to breed, and then dies.
Existence is full of dangers for adolescent sockeyes. Initially, the eggs could be consumed by amphibian bugs and alternate creatures even before they hatch. These and different predators will go after the infants once they do incubate. As the toddlers develop, yet more predators take their toll, incorporating fish-consuming birds.All the aforementioned dangers and more are encountered even after the little fish compass the relative protection of the ocean, an adventure that takes one to
three years. Once in the sea, young sockeyes feed and grow rapidly.After a further one to three years, during which time they are preyed upon by animals such as seals, sea lions, and killer whales, the newly matured sockeyes begin the return journey to their home waters to breed. Perilous Return
As they return home, they face more challenges and predation. Some lose their way and never make it back. The others must overcome strong currents, nets set out by fishermen, dams, and other obstacles; even the sharp teeth and claws of grizzly bears.

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