Has the giant whirlpool / swirl in ocean off Japan during tsunami been explained?

I heard the news team say that it was just like when you drain your tub. The water was going in the Earth that had opened up. You did hear that Japan the whole country moved 8 feet from it’s old location didn’t you? And that it caused a change in the vibration of the Earth and also in the rotation of our Planet.

The hole-in-the-bottom-of-the-sea works for me. Traditional whirlpools are a result of ocean currents and the topography of the seabed.
Though under the circumstances, I’m willing to write the whole thing off as Godzilla tossing in his sleep.

Ocean swirls are caused by temperature differences. A strong eddy is like a tornado (vortex).

It could just be a result of an awful lot of seawater flowing in an unusual direction. It would really take a detailed model of the event with incredible amounts of highly accurate data to reproduce the event, if such a thing is even possible.

I had been wondering about this too. Thank you to everyone who has answered so far; I just assumed someone had divided by zero.