Imagine if you had two really good wires that were 500 miles long, and you attached them to each end of a AA battery, and put the other ends of the wires in the Atlantic ocean off the coast of New York and Florida, respectively. You wouldn’t expect the tiny AA battery to have much if any effect on the ocean and its life. But in fact sharks can detect signals that incredibly small, and it uses those signals to find its prey. This is one of a great many examples of electrical organs in fish that give them astonishing capabilities to sense the environment around them.
Cornelius G. Hunter is a graduate of the University of Illinois where
he earned a Ph.D. in Biophysics and Computational Biology. He is
Adjunct Professor at Biola University and author of the award-winning Darwin’s God: Evolution and the Problem of Evil. Hunter’s other books include Darwin’s Proof, and his newest book Science’s Blind Spot
(Baker/Brazos Press). Dr. Hunter's interest in the theory of evolution
involves the historical and theological, as well as scientific, aspects
of the theory. His website is http://www.darwins-god.blogspot.com/