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Bats have no real use for eyes....an alien life form could "see" in sound, or even touch, like in Moles or smell as with Ants. Even using taste to see is not beyond belief, an alien life form could evolve to use taste to get about, Snakes use the smell of taste to locate prey.
RD goes into detail with what is understood in sonar as a method of "seeing" in Bats, "Unweaving the Rainbow" and "The Blind Watchmaker" for those that haven't yet read them.
Permalink Mon, 03 Oct 2011 13:37:24 UTC | #877415