Ocean waves, waterfalls, and thunder are just a few examples of soothing brown noise sounds, but if those aren't your jam, you can also try listening to straight static frequencies. Many apps and ...

Whales contact each other over huge distances in the ocean ... collect sound waves efficiently and channel them into our eardrums. Rabbits’ large ears can hear lots of sounds.

These can include relaxation sounds like thunderstorms, rain, brown noise, ambient sounds, crickets, ocean waves, and more. Although Alexa doesn't play sleep sounds, it can fulfill the request ...