[koheripbal]

Megaphones Amplify sound. Your analogy doesnt work. In no layer of the ocean is sound amplified.

[kube-system]

Electric megaphones amplify sound. Acoustic megaphones direct sounds, much like what the article describes.

[jessep]

Yeah, I was thinking about the old fashioned cheerleading things, without any electricity involved. I even thought about being explicit in case someone was going to be pedantic ... there’s even an emoji for it