Methods for avoiding predation by bats
A few insects have developed systems to protect themselves from predation from bats. In America, there are moths that have the ability to tune in to the frequency of the bat'ssonar. As soon as they hear a bat approaching, they drop to the ground. Other species go into a spiralling dive which the bats find hard to follow. Yet others manage to jam the signal or send back high frequency sounds that convince the bat that they are inedible or are objects to be avoided.