The best diving and snorkeling in Thailand is found here, The Similans are also home to a huge variety of marine life and incredible opportunities to see rare and endangered species. From the rare Nicobar Pigeons to the migrating Whale Sharks...even nesting turtles. "Best beaches in Asia?" you will certainly agree after visiting. While the underwater world may attract some people - there are also many varieties of birds and animals inside the national park. And of course - the long beaches!