What is the sea in Lingshui made of? How can it be so blue?

Lingshui, a hidden gem in Hainan, is home to many unknown beautiful sceneries. 🏝️ Transportation • External transportation: You can fly to Sanya Phoenix International Airport, then take a bus or taxi to Lingshui. You can also take a train to Lingshui Railway Station, then take a bus or taxi to the scenic area. • Internal transportation: There are buses in Lingshui County, but they are infrequent. If you want to travel conveniently, you can choose to drive or take a ride-hailing car. Attractions • Boundary Island: It has a sea view comparable to the Maldives. The sea is clear, and you can dive and experience water activities. It is about a 50-minute drive from Sanya Haitang Bay, and the boat ride takes about 10 minutes. The ticket includes the boat ticket, and the price varies depending on the season. • Clearwater Bay: Known as the "singing beach," it has fine sand. You can play in the water, go to the beach, and visit the popular lighthouse. It is free to visit. • Perfume Bay: It has a pristine coastal view, with clean beaches and dense coconut groves. It is free to visit. • Nanwan Monkey Island & Dadai Island: Monkey Island is the world's only island-type macaque nature reserve. You can take a cross-sea cable car to enjoy the full view of the Danjia fish farm. Dadai Island is suitable for relaxing vacations. • Yetian Ancient Village: It is a settlement of the Li and Miao ethnic groups. You can experience ethnic customs, traditional crafts, and local delicacies. The ticket is CNY 10. • Diaoluoshan National Forest Park: It is one of the four primitive forest parks in Hainan. You can hike through the rainforest and enjoy the waterfalls. The ticket is CNY 40. Food • Lingshui sour noodles: A traditional dish made with mung bean noodles, with a sour and spicy taste. • Red rice porridge: Made with Lingshui's unique red rice, with red dates and other ingredients, it is sweet and nutritious. • Coconut chicken: Chicken cooked with coconut milk and coconut meat, with a delicious and sweet taste. • Roast suckling pig: Piglets are marinated with seasonings and then roasted, with crispy and tender meat. • Danjia seafood noodles: Thick noodles with fried shrimp and other ingredients, topped with gravy, with a fresh and sweet taste. • Danjia puffer fish porridge: Made with fresh rice and puffer fish, the fish and rice blend together, with a fresh and fragrant taste. Accommodation • Clearwater Bay: There are many hotels, convenient transportation, and a lively atmosphere, with many sea view rooms to choose from. • Perfume Bay: It is relatively quiet, with good construction by the sea, suitable for those who like peace.