From what I've seen and heard from many local divers, the Nautilus is terrible for raping and pillaging the bottomQUOTE]
I've been on the Explorer 4 or 5 trips, and on a couple on Mike's previous boat the Nautilus VII, and I can unequivocally say that I've never seen any "raping and pillaging." Mike, in fact, occasionally dives with the group and gets quite upset if there is *any* damage to walls (even finger-touching to push off a wall in current). I've been with operators and on live-aboards all over the world, and I know of no one better than Mike's operation at ecological awareness and a strict no-take/no-harm policy... --Ken