Dangerous Water Movement: Never Attempt to Swim Here

(04Oct2011 by: baylander)

I joined one outing along with fellows in the university sponsored by the International Affairs - Chonnam National University. Our group visited one island called Myeongryang near the metropolitan city of Gwangju, South Korea in commemoration of the Battle of Myeongryang by Japanese and Korean forces in 1957. While on the island, I went for a walk in its nearby terrains and found this rare movement of water in the island. I strongly believe that anyone who would attempt to swim in this area will surely ***. You can watch the video below (though my poor cam took it), it's really dangerous to swim here. 

For those who are studying water related issues, please explain this water current. It's a seawater surrounded by islets. I'm just curious although not related to my field.