Lanta Island is full of travel agencies that can take fast boats to Koh Rok. The two islands consist of snorkeling on one island and lunch on the beach on the other. The sea is very clear and blue. The beach is really fine white sand. It's worth visiting. Snorkeling can see many corals and colorful fish. We booked 1200B people directly at the front desk of the hotel. It is estimated that the street travel agency can reduce the price to 1000B. The speedboat was bumpy and seasick, but there were medicines on board. In dry season, although the weather is good, the sea water salinity is very high. When the first snorkeling point comes up, it feels dizzy. The latter two snorkeling points have little physical strength. Pay attention to the recharge after landing. Lunch was good. Overall, Lanta and Rock Island were destinations for Jamie. Absolutely much better than Phuket!