He considers this for a moment. So Soundwave uses sound manipulation attacks, and while that's not an area Billy specializes in, it might be worth a try. "It's certainly possible that they have sound receptors, but I'm not sufficiently informed to give you a definite answer. Those receptors would only be equipped to process a certain capacity before experiencing damage from overload, just as humans suffer hearing damage from high-pressure sounds."

"The only problem with that method of attack, though, is that we don't know the sound pressure needed to damage the Yeerks, if there is one. We could easily cause irreversible damage to the rest of the crew while leaving the Yeerks unaffected if their threshold is high enough."