The original scheduled tour was postponed, and we only received a notification email from the operator on the morning of the tour day, which was a bit too sudden. Luckily, we chose the afternoon session. The next day, we gathered at Pier F-28, and the staff also arrived late. For those who haven't snorkeled before and aren't very confident swimmers, it takes some time to get used to being in the water. We saw quite a few sea turtles, and the scenery was beautiful.