To participate to this activity you need to be a certified Open Water Diver. 1. We will try your equipment together to find the one that suits you best (wetsuit, fins, masks). 2. You will attend a very interesting briefing on the corals, the fish, the fluorescent effect, the equipment, the marine environment and your activity. 3. We will give you additional professional equipment: You will receive 2 diving flashlights: 1 with white light + 1 with ultraviolet light to see all the corals and anemones in fluorescent. 4. We will go together to Haad Yao Deuk, a secret beach from where we will swim to the reef to dive in fluorescent with our ultraviolet lamps. 5.You will see the invisible. You will stay in the shallow area. The beach is located 2 minutes from our dive center and the reef is close to shore. For this fluorescent diving activity, you will discover the reef with one of our professional guides. 180 species of coral react with these ultraviolet dive lights. Your instructor will take care of you and show you the best parts of the reef with its secrets.