Of course I know they "home" to their natal streams to reproduce!
My question is how they do it! Do you know the location of Port Hope? Turn on the Google Map , and see how far it is from Port Hope to Pacific.
And also, did I mention that there is a Rocky mountain blocking in the way between port hope and Pacific ocean?
Why do you guys always think this is pretty easy to achieve?
Scientists believe that homing is accomplished by tracing ‘pheromones’ or chemical signatures of the home stream! Salmon have an extremely keen sense of smell - they can smell chemicals down to one part per million.