http://www.youtube.com/watch?v=HhereKV_QKk It shows the Isle of Man ferry departing.
Saw you video on YouTube "Strange Shadow Moving Across the Clouds". They are birds, nothing strange about that.
Great video
What day did you do this?
Thanks Wheels. I done the video on the 2nd of May Katryn, the gusts of wind ruined the first hour of shooting. I don't see how birds can affect the way clouds change flow as i said in the comment "it must be the sun affecting the clouds"