© 1975-1979, 2008 Robert A. Freitas Jr. All Rights Reserved.

Robert A. Freitas Jr., Xenology: An Introduction to the Scientific Study of Extraterrestrial Life, Intelligence, and Civilization, First Edition, Xenology Research Institute, Sacramento, CA, 1979; http://www.xenology.info/Xeno.htm

13.3  Acoustical Senses

Hearing is extremely important in many animal species on Earth, so we may expect it to be widespread among the lifeforms of other worlds as well. Modulated waves of pressure, impressed on the gaseous or liquid medium in which the creature dwells, can convey much valuable information relevant to survival.

Last updated on 6 December 2008