Peaceful vibes, emerald lagoons, and stunning beaches greet you at these 3 small and lesser-known islands. Add in an abundance of impressive snorkeling spots and reefs, and this makes for an extra special day out.\n\nThe relatively untouched island of Koh Ngai has crystal clear waters, colorful corals, and marine life, and this is a great option to start your private tour for some serious snorkeling.\n\nA short ride takes you to Koh Mook, which is home to the widely-known Emerald Cave, aptly named for the light reflecting off the water at the cave entrance creating this emerald hue. \n\nKoh Kradan arguably has the most beautiful and quiet beaches in all of southern Thailand, complete with wonderful coral reefs just near the shore and you can get the opportunity to arrive in style and even stop off to enjoy the scenery with a relaxing beach picnic lunch.