The coaches are very nice, but the water at Shanshui Beach was not very clear when we went there that day. It was turbid. There were almost only some black fish in the seabed walk. The walk only took 5 minutes of the trip, which was actually quite short. The coach took us down one by one. Only two people could go down at a time. Others could play diving on the boat. If you have your own diving goggles, you can also go to the nearby seabed to see. Although the itinerary for the seabed walk says that there is an underwater mailbox, the coach said that there is no such thing. Only those who buy snorkeling can have it. However, because we have our own diving goggles, the coach still took us to see it. However, the water quality is still quite turbid and looks blue and yellow. The coach said that the mailbox will be red when you look at it from the front. Diving is quite fun. There are three ways to jump, the general wooden board, the slide, and the bow. Those who are not very brave can practice on the boat now.