Local buses 公共汽车
In Sanya city, you will see many buses, but in the three famous resort area, buses you will see is the tour buses, there are two routes are very useful, one is from Sanya Airport to West Station(西站), and another one is from Sanya Tianya Haijiao to Yalong Bay.
These two routes are including many hotels and attractions. And they will stop anywhere as you wave to them, and they will let you get off anywhere you want, quite like a taxi. The exact location you can catch the buses, you`d better ask people who wokrs in the hotel, they will tell you.
The tickets price are based on the distance, since it`s a long trip, usually will cost 40 minutes from the start to the end, so they separated the whole trip as 4 parts, and each parts have a price for it, if you take maybe 3 parts of it, the price will be accumulated. The whole trip will cost 8 Yuan.
The tour buses are nice and comfortable, with a strong air-conditioning, never get crowed, you will always have a seat, so i think it`s better than the local taxi.
Another one is from Yalong Bay to Daxiao Dongtian which the bus is run by the personal, i didn't took that, but it looks not bad.
This is the bus from Tianya Haijiao to Yalong Bay