And this one here is how they would swim behind the others, all the while bobbin' their heads back and forth in time to a song only they could hear. It was really an experience to watch. I am glad you got to see them, also. (I know these are not the sharpest photos, the lense I used was a bit heavy for the tripod I have. (Oh, Santa, may I have a heavy duty tri pod for Christmas, I've been really good).