Overall, just too blurry, even considering the mystical nature of the challenge. POssibly some resizing issues or maybe camera limitations. I do suspect a tripod would give a little extra sharpness, even if other factors are not ideal. Just a thought.
I'm not quite sure how this image fits into the challenge theme. The first thing I think of is 'Loch Ness' when I see this. ;^) The second thing that comes to mind is fuzzy/blurry - is that part of the 'Mystery'? Hopefully there is something in the photographer's comments for this that will clarify it some after the challenge is over. Good luck in the challenge.
This could have been a very good shot, but is too much out of focus for my taste. I also think it would improve if you crop from the bottom and the left hand side. Nice colours.
d'oh. That blur isn't adding much to the shot. The subject isn't conveying M&M to me either apart from the title. Too bad there didn't just happen to be a guy on a raft with a push pole going by, eh? Gonna have to hit you with a 3-bomb.