yes, but its so much worse :D so while being encased in fluids does help, as some posters have mentioned, the stopping point is that your lungs will collapse under enough pressure. We can get around this factor with oxygen saturated liquids. Essentially you have to breath in this liquid that our bodies can actually pull oxygen from and dump carbon dioxide into, and you can withstand even heavier G forces. Apparently the innitial process for getting this stuff into your lungs is terrifying and stressful, once you're in the liquid you just have to kind of push in and out to breath.