Scientists have been puzzled over the purpose of the Tiger Moth’s tymbal organ membrane, which is able to vibrate at ultrasonic frequencies. The consensus is that it serves as a warning to bats, since the moths are able to retain poisons harvested from host plants. Scientists believed the moths who were poisonous were warning the bats, and those that weren’t were faking it anyways.

New experiments by Aaron Corcoran of Wake Forest University, however, have confirmed another theory: the moths are actually using the fast paced clicking to jam the bats’ echolocation. It is the first evidence of sonar jamming ...

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