Declared a national park in 1983 , Laem Son is a coastal park that extends out to include a number of a beautiful islands such as Koh Khai Yai which is the best spot for snorkeling to see shallow water coral reefs in Ranong. Most of the islands preserve its natural, perfect condition where visitors can walk natural trail around the island and watch sea birds.Other beautiful islands are Koh Kam where pure white sand expands all over the island which is the same as Koh Kang Kao that is the home of thousands of bats. This island is also another good spot to dive. there are accommodations for visitors too. The best season to visit here is January - March