The swamp on the north coast is

This scenic spot consists of 10 islands, large and small. Because of its unique animal and plant ecological environment and fresh and clean marine air, it has become an ecological protection zone recognized by UNESCO.

The formation of swamp island can be traced back to 1362, when seawater flooded and swallowed up a large area of coastal land instantly, causing heavy casualties to people and animals. After the flood, the once vast beach became dotted with hundreds of islands. In the next few hundred years, there were several major floods, and after each flood, some islands sank to the bottom of the sea permanently. Several years have passed, and now there are only 10 islands left in this area. However, tides and waves have never stopped eroding them, so these 10 swamp islands appear and disappear with the rise and fall of tides.