Coincidentally, one of the last stops on our weeklong sailing, Ko Similan is also the most highly anticipated. In the days leading up to our arrival, James MacIntyre, the Star Clipper's resident master dive instructor, has issued ample reminders that it will offer the most spectacular diving and snorkeling of our entire island-hopping adventure. And how! A dip below the surface of the shallow, crystal-clear water reveals a whole new tableau teeming with life: sharks, barracudas, clown and triggerfish, and the colorful coral reefs where they all make their homes. It's unlikely you'll have the island to yourself, but these are riches you'll be happy to share.