#8 - Thailand's Tarutao National Marine Park It's really hard to pick a favorite island in Thailand. There's literally hundreds of them. But when we saw the secluded beauties that make up the Tarutao National Marine Park in Southern Thailand, we were hooked. This chain of wild, jungle islands offers beach camping, peace and quiet and some amazing snorkeling. Though Ko Lipe has gotten rather busy, Ko Adang, Ko Tarutao and Ko Rawi remain delightfully undeveloped.