Something Weird in Tsunami Video!

Something very weird in this tsunami video from 10:46 to 10:51.
I think it is just water splashing...but it sure looks weird!

http://www.youtube.com/watch?v=Mc4sQT_2GGE
Tsunami in Japan 2011 Shocking video- enhanced ^ stabilize

Something very weird in this tsunami video from 10:46 to 10:51