An eight-storey drop slide, an 1,800-metre lazy river that loops the whole park, then a walk through a tunnel with sharks and eagle rays gliding overhead — all inside one resort, and open to visitors who are not staying there.
There is a moment at the top of the Leap of Faith slide — eight storeys up, looking down a near-vertical clear tube that drops through a tank with sharks circling below — when you have to decide whether you are actually going to let go. A second later you are travelling fast enough that you cannot quite catch your breath. That is the headline ride at Aquaventure, and the one with the longest queue.
Atlantis Sanya is a mega-resort on Haitang Bay, on the north-eastern side of Sanya on Hainan island. It is far more than a hotel: it combines the Aquaventure Waterpark with The Lost Chambers Aquarium in one complex — a sister property to the Atlantis resorts in Dubai and the Bahamas. The thing that pulls people in is the aquarium, home to roughly 86,000 marine animals across 280 species, headed by the Ambassador Lagoon, one of the largest aquarium tanks in the world.
Good news if you are not staying at the resort: both the waterpark and the aquarium are open to the public on a day ticket — you do not have to be a hotel guest. (And if you do stay here, entry to both is usually included in the room rate.) If you are visiting Sanya with children, this is a place worth blocking out a whole day for.
From the scariest slide to the underwater tunnel — these are what people talk about most.
A near-vertical drop from a tower as tall as an eight-storey building, ending in a clear tube that runs through a shark tank. It has the longest queue in the park and is the most-filmed ride for social media. If you are afraid of heights you can skip it — but coming all this way and not trying it feels like a missed opportunity. Queue right at opening for the shortest wait.
A current channel that loops the whole park for 1,800 metres — drift along on a tube past tunnels, waterfalls and the occasional rapids section. It is the perfect way to rest your legs between queues for the big slides, and ideal for younger children and any adults who would rather skip the intense rides. One full loop comfortably takes an hour.
The heart of The Lost Chambers is a 13.5-million-litre seawater tank — about five Olympic pools — where sharks, large eagle rays and person-sized groupers glide overhead through curved glass and a walk-through tunnel. The aquarium holds around 86,000 animals in total. It is the spot where children light up and adults cannot resist taking photos.
Beyond the big tank, The Lost Chambers is divided into around 21 chambers linked by underwater passages — a darkened jellyfish room where dozens drift in shifting light, a delicate seahorse-and-sea-dragon gallery you have to look closely to appreciate, and shark and ray feedings that usually run at 3 pm and 6 pm. Check the day's show times at the entrance.
The Splashers area has dozens of colourful children's slides and a safe shallow-water zone for little ones, while the broad wave pool is good for a family sit-down in the water. There are also swim-with-dolphins and sea-lion programmes at Dolphin Cay — these are separate paid packages that need booking ahead. Children under 13 must be supervised by an adult at all times.
There are three main tickets: waterpark only (adult ~¥338 / ~฿1,690 · child ~¥258 / ~฿1,290), The Lost Chambers Aquarium only (~¥198 / ~฿990), and a combo covering both (adult ~¥473 / ~฿2,365 · child ~¥365 / ~฿1,825). If you intend to do both, the combo works out cheaper than buying them separately.
Extras such as ray feeding, the Underwater Roaming walk, or a swim-with-dolphins session are separate packages not included in park entry — they cost more and some should be booked ahead. All ticket prices shift with the season and the channel you buy through, so check the price for your date before you go.
Aquaventure Waterpark opens 10 am to 6 pm Sunday to Thursday, extending to 8 pm on Friday and Saturday. The Lost Chambers Aquarium stays open later, until around 10 pm (last entry roughly 9.30 pm). That means you can spend the daytime on the slides, then move on to the aquarium in the cooler evening at a relaxed pace.
Leave plenty of time — the waterpark alone easily eats up 4 to 6 hours, and you should set aside a full day if you are adding the aquarium. Bring swimwear, sunscreen, and budget a little for a locker (~¥20–50 / ~฿100–250) and a towel (~¥30 / ~฿150).
Sanya is mainland China's winter beach escape, so Chinese New Year in February, the Golden Week holidays and the winter months of December to February are very busy, with long slide queues and higher ticket prices. If you have a choice, visit on a weekday outside the holiday periods.
Whatever day you go, arriving at the 10 am opening is the key move — the morning is quietest, so ride the headline attractions like Leap of Faith before the queues build, then drift the lazy river and walk the aquarium in the late afternoon as the crowds start to thin out.
Atlantis sits at Haitang Bay, away from Sanya's main beach districts — the easiest way there is by car.
Staying at Atlantis Sanya usually includes free entry to the waterpark and aquarium — or pick a Haitang Bay hotel nearby.