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DavidMcC's Avatar Jump to comment 27 by DavidMcC

Comment 26 by Ignorant Amos

Bats have no real use for alien life form could "see" in sound, or even touch, like in Moles or smell as with Ants.

Only completely blind bats, which isn't many species. At dawn and dusk, eyes come in handy, even for bats, because they give much higher resolution vision than sonar "eyes". If there is even a low level of light, therefore, animals (ie, organisms that aren't rooted in the ground) will evolve eyes to see it, even if they also have any number of other senses.

Mon, 03 Oct 2011 14:31:36 UTC | #877441