Aparently 180 dB causes eardrum rupture and intense pain and thus is extremely deadly.
For comparison’s sake, Krakatoa volcano’s eruption was measured at around 183dB.
In: Biology
Sound waves will bounce when hitting an entity of significant different density. This is true for water and air. A lot of the sound energy actually will bounce off the air and stay in the water and vocal versa.
Try it when you are in a pool, can you hear voices when you are 6” below the surface.
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