Experience the best tours and activities Similan Island has to offer, with half-day and full-day tours available so you can visit Similan Island 's top attractions. We offer breathtaking boat tours around the Andaman Sea and in the Gulf of Thailand, fun and adventurous activities on Similan Island ’s mainland, relaxing sightseeing excursions and much, much more. So which part of Similan Island do you want to see? And what activities do you want to do? We can help you, just select from the different categories listed below.