I started thinking about the Sea Dragon rocket and wondering how much environmental damage launching one would do, since I'm not entirely sure if even Point Nemo is far enough away from coastal marine life to avoid the shockwave of the launch killing off entire species, or if it's far enough away for the noise from the shockwave to avoid being a problem in itself even on land. I can't find any numbers to help me figure out how many decibels the 79,000,000 lbf launch would cause. My gut tells me it would probably devastate oceanic life and the shockwave in the air would probably make it a good part of the way around the Earth, if not go around at least once, making it not viable just on those grounds, but I can't figure it out for sure.