The new burger is called the "Tong Shrimp Crab Burger." In addition to the crab cake and shrimp, the burger also includes lettuce, tomato, onions, and tartar sauce made with Old Bay Seasoning.
In case, you want something a bit more surf and turf, the chain is also offering the Red Crab Whopper, which takes your standard Whopper and adds the crab cake and tartar sauce to it. But that's not all...

Photos via Burger King South Korea.