During Japan Tsunami a strange creature was caught on camera (real footage). What is the realistic or scientific explanation of this?

Or do you think that it is a kind of supernatural thing?

https://www.youtube.com/watch?v=C25RTDXFNWY

Tell me your theories!

s3.amazonaws.com/.../...4e16-98cf-3626dadc2209.gif
During Japan Tsunami a strange creature was caught on camera (real footage). What is the realistic or scientific explanation of this?
Post Opinion