The salmon is a familiar example of an anadromous fish; everyone has seen dramatic images of salmon struggling as they swim upstream to spawn. Most salmon return to their "home stream," the stream where they were born, to spawn, even though may have traveled thousands of miles away from it as adults. In the 1960s and 70s scientists learned that they recognize their home stream by smell.
- Wile, Dr. Jay L. Exploring Creation With Biology. Apologia Educational Ministries, Inc. 1998