Sea Walker - Đi bộ đáy biển

Good to know

• Nature preserve
• Open 24 hoursEvery day
• Under 1 kmfrom An Giang center
• Good for kids
• Restroom
• Official site
• 3.8 / 582 reviews
• An Giang

Walking the seabed without getting wet

The idea behind sea walking is disarmingly simple. You are fitted with a special helmet — a clear-domed rig that keeps your head and shoulders dry while an air compressor on the boat above feeds you oxygen continuously — and once it is sealed you step off into the water and just walk, as if along a path on land. A trained diver stays right beside you, the seabed area is bounded with a handrail line, and your head stays comfortably at breathing level the whole time, so the only thing you have to do is look around.

Because you are breathing normally and your hands stay free, you can walk at your own pace, stop to watch a shoal drift past, and — on Namaste's tours — scoop up fish food and feed the fish from your palm at close range. That steady, dry, 'I'm really standing on the sea floor' feeling is exactly what makes it memorable, and it is available to guests who could never manage a snorkel or a scuba dive.

A living coral garden, themed zone by zone

The park at Hòn Mây Rút Ngoài is presented less like an open reef and more like a curated aquarium you are standing inside. Its roughly 500 m² nursery cultivates more than 250 species of hard and soft coral, with another 500 m² devoted to the underwater attractions themselves, and the route is arranged into named 'rooms' that build the drama as you walk.

You pass an Anemone Island — home to the orange-and-white 'Nemo' clownfish — a reef of hundreds of giant clams, a Staghorn Coral Field that you duck low to admire, and Coral Mountains that rise in Himalaya-like folds from the sand. There are ancient, centuries-old coral colonies, the playful 'Bubble Dance' where jets of bubbles swirl around you, and the 'Fish Feast' where a chattering crowd gathers to be fed. It is the densest, most colour-saturated display of coral you are likely to see standing upright, face to face with it, anywhere in Phú Quốc.

The same southern waters around the An Thới islands shelter a wide cast of reef life beyond the corals — butterflyfish, damselfish, clownfish, parrotfish, groupers and cuttlefish among them — so even between the themed zones the walls of water around you are rarely empty.

Reaching the island and combining it with a day out

Hòn Mây Rút Ngoài sits in the An Thới archipelago off Phú Quốc's south, so the experience begins with a boat crossing. The standard route is a speedboat transfer from An Thới port — Namaste's packaged departures collect guests around 14:00 — often with a scenic island-hopping stop en route. The sea-walking is easily combined with a three- or four-island trip, adding Hòn Mây Rút, Hòn Móng Tay and Hòn Gầm Ghì for beaches, photos and a seafood lunch, and in some packages the world's longest sea-crossing cable car and Aquatopia water park.

If you prefer to arrive under your own steam, a private speedboat charter to the island also works, though the guided Namaste bookings bundle the transfer, the equipment and the underwater photographer together.

What it costs and what's included

Namaste sells the experience in tiered packages that rise mainly in time spent underwater and the extras bundled around it. An entry option centres on the walk itself, the Standard package adds underwater photo and video capture, and a VIP tier extends the sea time and includes the Bubble Dance show; fuller combo tickets layer in the island tour, an eight-dish seafood lunch, hotel transfers and free photos and flycam footage across the day. Undersea photo-and-video sets are the most popular add-on, with clips handed over to your phone soon after you surface.

For a sense of scale, general Phú Quốc sea-walking quotes typically land in the region of one million dong per person, and Namaste's combo packages are priced higher still once transfers, lunch and photography are folded in — so it is worth treating as a premium, once-in-the-trip splurge rather than a budget activity. The park also notes that a portion of revenue is reinvested into a marine-environment protection fund.

Is it safe, and who can join?

Sea walking is deliberately engineered to be the most accessible way into the sea, and the venue frames it as suitable for guests who cannot swim at all. Children from around five or six years old and healthy adults up to about seventy can take part, and clear domes work for people who wear glasses. The area is a calm, depth-managed, shallow zone with light currents, a guide attached to each walker, and a briefing beforehand on the hand signals you use to communicate and how to move safely.

It is not for everyone, though. The usual cautions apply: it is discouraged if you are pregnant or have heart problems, high blood pressure or severe asthma, you should not go in on a very full stomach, and you must never lift the helmet, wander outside the marked area, or touch the corals and sea life. A little initial nervousness on the way down is normal and quickly gives way to the novelty of standing on the seabed.