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One of the most fascinating abilities of bats is echolocation. The principle is relatively straightforward: a bat emits a high-frequency sound, akin to a brief scream, from its mouth or nose. This sound is pitched so high that it falls outside the range of human hearing. As the bat emits the sound, it temporarily closes its ears with a special flap. The sound then travels through the air as sound waves, which bounce off solid surfaces, such as flying insects. At this point, the bat opens its ear flaps to listen to the returning echoes. The nature of these reflected sounds allows the bat to determine, with remarkable accuracy, the distance, size, speed and direction of its prey. Bats can emit these signals many times per second.
