Saw this on another forum and thought I would share it. It is definitely an invert, look at the water depth read out when it is seen.
[video=youtube;-E-8_wDgN7c]http://www.youtube.com/watch?v=-E-8_wDgN7c[/video]
[video=youtube;-E-8_wDgN7c]http://www.youtube.com/watch?v=-E-8_wDgN7c[/video]