I've heard about this! From my adventurous side, I think it is wonderful, extremely aesthetically pleasing, etc. My more cautious side worries about mega tsunamis though. Japan, 3-11-11, proved they CAN happen, and that was not even with a 10-super quake, or oceanic meteor strike. As long as the structures and major infrastructure can be made strong enough to resist mega-tsunamis (and there a quick evac plan in place to deal with them)...let's go!