I have never seen anything like that, but I'm sure a shark, a wreck (not a little boat in a lake) or anything big could take my breath away. On the other hand I think everything underwater is amazing, isn't it? I love to watch my bubbles ascending to the surface...
Yes ...amazing...surfacing under the stars, to an angry or calm sea, the depths of the oceans, lakes, springs or quarries...no matter what the vis, the current, the circumstance..I am breathing underwater and it is amazing..