Following links posted at the bottom of his text brought me here to the whirlpool.
http://www.bbc.co.uk/news/world-asia-pacific-12709856
The BBC commentator is full of it. He couldn't even finish his sentence without mentioning global warming.
When the camera was zoomed out, notice the long narrow breakwater.
As tsunami water rushed by, some of the flow was peeled off by the jetty like an apple peel and curled back on itself to form an eddy.