Laemson National Park
Laemson National Park is a coastal park that extends out to include a number of beautiful islands such as Koh Khai Yai which is the best spot to snorkeling for shallow water coral reefs in Ranong. Most of the islands still preserve its natural in perfect condition where visitors can do natural trail around the island and watching sea birds.
Other beautiful islands are 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 best spot to do diving. There are accommodations offers for visitors too. The best season to visit here is January-March.
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Source: Tourism Authority of Thailand