The most striking feature of these islands, at first glance, are the huge boulders that grace the shores and the blinding bright white sand beaches. However, the most interesting sights are beneath the waves with the same boulders below that have turned the waters around the Similans into an adventure playground for divers. A crystal clear, epic dive at one of the top 10 dive spots in the world! The Similan Islands, or Nine Islands as they are also known because of their number, nestle in the Andaman Sea to the north of Phuket and are world-renowned among diving enthusiasts for underwater sightseeing. Accessible only by sea, The Similan Islands are stunningly beautiful with scenes straight out of your dreams of a tropical paradise.