Thailand: Ko Tarutao Marine National Park, a yacht at anchor just off Ko Adang

Ko Adang is around 30 sq km (12 sq miles) in area, and is almost completely covered in tropical rain forest. The island is famous for its clear waters, fine The island is famous for its clear waters, fine quartz beaches and superb coral reefs, the latter providing a habitat for shoals of brightly-colored fish and a host of other marine creatures.<br/><br /> The interior of Ko Adang is also beautifully pristine, with several waterfalls cascading down from the central heights (703 m3t34w or 2,300 ft), most <br/><br/>The interior of Ko Adang is also beautifully pristine, with several waterfalls cascading down from the central heights (703 m3t34w or 2,300 ft, most Ko Tarutao Marine National Park consists of 51 islands in two main groups scattered across the Andaman Sea in southernmost Thailand. Just 5 miles (8km) to the south lies the marine frontier with Just 5 miles (8km) to the south lies the marine frontier with Malaysia's celebrated Langkawi Archipelago. Tarutao is world-famous for its pristine diving sites, rich marine life and outstanding natural beauty. Because of the location of the islands so far out to sea, the park is only safely accessible Because of the location of the islands so far out to sea, the park is only safely accessible during the northeast monsoon between November and April.