[SpookyZalost]

@darth. I can say from experience that underwater bases aren't that difficult... In fact the easiest way to build one is to first put down a door... This acts as your air supply. Then you level the area you want to build in. Shape it in sand/gravel before you build the shell. Then finally dig the sand/gravel out. If anyone remembers my underwater domes from years ago, that's how I build them... Never was more happy to have a few diamond shovels.