Deafness. How loud is a fart? Cochlear implants. Alien defense engineering.
How cochlear implants differ from hearing aids. How a cochlear implant works. The difficulties of hearing loss.
Ughhhhhhhhh. Compression and suffocation.
The strangeness of terrestrial echolocation. Frequency adaptations for different types of prey. Signal rate at different distances.
Planetary orbit situations with extended periods of surface darkness. Extremophile armor development. Echolocation evolution. Space cat behaviour. Dinner Time ambulation.
Feedback loops. Amplitude vs frequency and damaging the hearing apparatus.