"Endless Meanders, Alagnak River Tributary"
Salmon migrate back to their birthplace to spawn, but exactly how they manage to find their home is a mystery. Scientists believe a combination of factorskeeping track of the sun and stars, circadian rhythms, an organic magnet in the brain, and a keen sense of smelldraw the salmon back to the spot where they were born.
Photograph by Robert Glenn Ketchum
Book Title: Rivers of Life: Southwest Alaska, The Last Great Salmon Fishery
Aperture Foundation, Inc.