If there was ever a prime hunting ground for evolutionary evidence in the genes, it should be in the relationship between land and marine mammals.
Even deer know how to respond to the silent force surrounding the earth.
To understand migration by the earth’s magnetic field, biologists may have to extend knowledge of electromagnetic theory into quantum mechanics.
Fish have some tricks up their fins that are correcting misconceptions and teaching us about optimization.
Salmon may swim hundreds of miles up their native river to spawn. They need oxygen provided by a finely tuned delivery system in the heart.