Larger fish, whales and humans. The yolk sac provides camouflage for the salmon. The yolk sac helps the salmon to steer in the fast currents of rivers. The yolk sac provides food for growth. There is no major different between the two species of salmon.
Atlantic salmon travel further than Pacific salmon.
On logs in a river. In dirt-free gravel. Questions for this quiz were provided by the King County Park System. This summer, you can come to a library and learn about cougars, bears and salmon.