From Patong Pier, it is basically a two-hour voyage, so it belongs to the deep sea and the sea is blue. It is also a good place to snorkel, especially exciting in the pool surrounded by mountains. The largest bird's nest cave on the mountain wall can also be seen on the sinking road. It is also a good place to fish and cast nets and fish in the sea. I caught a lot of grouper once. This attraction is almost a must-visit place for every tourist to Phuket, so there are many people and affect the beauty.