Enjoy the amazing underwater world of the National Marine Park Koh Rang after a wonderful one hour and 20 minutes boat ride from Bang Bao between the scenic islands of the Koh Chang archipelago to the Marine Park. On days that we do not go to the National Marine Park, we visit the HTMS Chang wreck and local reefs. It takes only 30 minutes to reach those reefs. There is no entree fee.The main difference between snorkeling in the Marine Park or at local reefs is that the Marine Park can be quite busy and local reefs are always quiet because the big snorkel boats don't go there. In the Marine Park you snorkel around very small islands, at the local reefs you snorkel mainly in open water.