On Sound Waves: Bats and Shaelmaars

Few know that sound is in fact not just a noise, but a wave - just like the waves of a sea striking against the shore. And just like them, sound waves strike everything in their path, which causes them to break. This particular property of sound is used by some species of animals and monsters as they carry out a kind of terrain mapping using their sense of hearing. Bats, which produce a specific sound to conduct echolocation based on how this sound's waves bounce off potential obstacles, make for a good example of this. Curiously, shaelmaars – mighty, though completely blind monsters – have developed a similar mechanism. They are able to locate their opponents by sensing the vibration of even the faintest sound wave.