Anhung is a fishing port and the local economy revolves around the harbourside fish market. There is a fantastic variety of seafood on sale here, fresh off the boats, most of it just in plastic buckets or polystyrene containers. I saw the biggest mussels I have seen anywhere in the world, here: even bigger than Arnold Shwarzenegger's! Check out the pictures.
Many of the nearby pensions and hotels provide barbecue grills where you can cook your seafood.