Key takeaways
- It is sand, not water. Currents pull sand and silt off a shelf about 150 m deep into a slope that drops past 4,000 m; the sea surface is flat and nothing pours anywhere. The full explanation is at is the underwater waterfall real.
- Only a helicopter or a seaplane shows it. Not a boat, not the beach, not a mask and snorkel. The four ways ranked at how to see the underwater waterfall.
- The 40-minute airport helicopter crosses the island over Grand Bassin, Kanaka crater and the Black River Gorges, then makes one or two orbits of a minute or two over the sandfall before turning for Chamarel — details in the helicopter tour review.
- The seaplane on GetYourGuide flies from Grand Gaube on the north-east coast and does not overfly Le Morne. It is a cheaper way per person into the air, not a way to see the waterfall — see helicopter vs seaplane.
- The Le Morne Brabant summit (556 m, about 4 h guided) gives you its rough shape on a calm clear day, not the effect. Best light is 10:00–14:00, May to November; January to March is cyclone season and cancels most flights — best time to see it.
What the 40-minute airport helicopter flight includes
This is the flight whose route is literally drawn around the waterfall. Here is what the seat buys, and what it does not.
In the seat
- 40 minutes in the air with the pilot, maximum 5 passengers
- Headsets and pilot commentary in English or French
- The full loop: Grand Bassin, Kanaka crater, Black River Gorges, Flic en Flac, the Black River coast, the underwater waterfall off Le Morne, Chamarel, the south coast
- Camera or phone welcome; doors stay on, windows are big
- Free cancellation up to 24 hours before
Not in the seat
- No hotel transfer — you get yourself to Gate 3 at SSR International Airport, Plaine Magnien, 30 minutes before the slot
- No meals; the airport has cafés if you are early
- No guaranteed pass if cloud closes in over the gorges: the operator reschedules or refunds rather than flying blind
- Not for pregnant women, anyone with back problems or anyone prone to motion sickness
- Bring your passport; the helipad is airside and they check it
Where the airport helicopter flight goes, in order
The 40-minute loop leg by leg, with the pass over the sandfall where it actually sits.
This is the route of the airport flight. The 35-minute flight with hotel transfers runs the west coast instead — Tamarin and its dolphin bay, Île aux Bénitiers, Le Morne and the waterfall, Chamarel, then Le Pouce and Pieter Both above Port Louis — and reaches the same patch of sea from the north.
- Gate 3, SSR airport helipad, Plaine Magnien — Passport check, weights confirmed, seats allocated for balance, headsets on. Arrive 30 minutes before your slot.
- Grand Bassin (Ganga Talao) — The crater lake on the central plateau at about 550 m, the island’s most sacred Hindu site, with the 33 m Shiva statue at its entrance.
- Kanaka crater — A forested extinct crater beside Grand Bassin; from above it reads as a green bowl in the plateau.
- Black River Gorges National Park — About 6,574 ha of native forest, the island’s largest park. If there is cloud anywhere on the island it collects here first, which is why mornings fly better.
- Flic en Flac and the Black River coast — Out over the long west-coast beach, then south down the lagoon towards Tamarin and La Gaulette.
- The underwater waterfall off Le Morne — The pilot banks over the south-west tip of the peninsula for one or two orbits of a minute or two each. Pale sand streaming off the shelf edge into dark water, beneath the 556 m face of Le Morne Brabant. This is the pass everything else is built around.
- Chamarel — The Seven Coloured Earth dunes and Chamarel Waterfall, about 100 m, the highest single drop on the island.
- South coast and back to the helipad — Along the southern shore and up to Plaine Magnien. Total time in the air: 40 minutes.
Forty minutes, of which the sandfall itself is a few. That is normal: the crossing is the price of the pass. If you want the pass to be the best few minutes possible, read how to see the underwater waterfall for light, sea state and which seat to ask for.
How booking works
Pick the way you want to see it
Shared helicopter from the airport, helicopter with transfers, private charter, or the summit on foot. All seven options are on the tours page.
Check live dates
The widgets pull real GetYourGuide departures. Book several days ahead in July–August and December–January; the aircraft carry four to six people at a time.
Book now, decide later
Every flight and tour here cancels free up to 24 hours before, so an early booking costs you nothing if the forecast turns.
Bring your passport and declare your weight honestly
The helipad is airside; seats are allocated by weight for balance. The rest of the list is at what to bring.
Check dates on the 40-minute underwater waterfall helicopter flight
The airport flight whose route is built around the Le Morne pass. Morning slots fly clearer; the live price is on the widget.
Which helicopter flight?
The three flights that pass over the sandfall, side by side.
| Mauritius: Underwater Waterfall by Helicopter Tour | Most reviewedMauritius: Scenic Helicopter Flight with Hotel Transfers | Mauritius: Private Underwater Waterfall Helicopter Tour | |
|---|---|---|---|
| Price | Live on GetYourGuide | Live on GetYourGuide | Live on GetYourGuide |
| Duration | 40 min in the air | 35 min in the air, 3 h door to door | 45 min in the air |
| Departure | Gate 3, SSR airport helipad | Hotel pickup by car, then the helipad | Hotel pickup included |
| Seats | Max 5, shared, per person | Max 6 per booking; min 2 to book, 4 to fly; seats by weight | Whole aircraft, up to 5, per group |
| Transfers | None | Included | Included |
| Sees the waterfall | Yes, one or two orbits | Yes, from the west coast | Yes, same loop as the airport flight |
| Rating | 5.0 (5 reviews) | 4.6 (98 reviews) | No reviews yet |
| View → | Book this → | View → |
Photo Gallery
What you see from the air, and from the ground
The places these seven flights and tours are built from.
The seven ways to fly, climb or sail around Le Morne
Three helicopter flights that pass over the sandfall, a seaplane that does not, and three ways to spend a day on the ground and the lagoon. Live dates on each.
Sees the waterfall40 min
· 5 seatsMauritius: Underwater Waterfall by Helicopter Tour
Most reviewed flightTransfers includedMauritius: Scenic Helicopter Flight with Hotel Transfers
PrivateWhole
aircraft · up to 5Mauritius: Private Underwater Waterfall Helicopter Tour
SeaplaneNorth-east
routePrivate Seaplane Tour with Scenic Views of Mauritius
Top ratedLe Morne
village guidesMauritius: Le Morne Brabant UNESCO Hike with Local Guide
Lagoon dayLunch +
open barMauritius: Catamaran Cruise – Dolphin Watching, BBQ & Drinks
By roadPrivate car ·
up to 6Mauritius Southern Tour (Chamarel, Grand Bassin, Le Morne)
What people say about these flights and tours
Snippets from travellers who booked the seven options listed above.
The optical illusion of the waterfall near Le Morne Brabant was the highlight.
Very nice tour. The pilot was great. Recommended.
Vikash was our driver… he can tell you a lot about the island.
Great experience with splendid weather. We even got to see two turtles.
Very nice hike with a magnificent vantage point over the Le Morne lagoon. Second part very technical; the guide’s presence was reassuring.
Unlike speedboats, the catamaran doesn’t harass dolphins. Food was excellent, staff outstanding.
Ratings and reviews are the operators’ live GetYourGuide figures. Read our full tour reviews ›
Four things people ask me before they book
The questions that actually decide whether you fly, climb or stay on the beach.
Is the underwater waterfall real?
The picture is real and the waterfall is not. Sand and silt slide off the edge of the shelf that surrounds Mauritius, about 150 m deep, and down a slope that drops past 4,000 m. From altitude the pale sand streaming into dark water looks like a river going over a cliff. Nothing moves on the surface. My grandmother called it la rivière en bas la mer, the river under the sea, which is closer to the truth than the English name. The whole thing is at is it real.
How do I see it?
From the air, and only from the air. The airport helicopter and the two hotel-pickup helicopters all pass over it; the seaplane sold on GetYourGuide flies the north-east coast and does not. From the summit of Le Morne Brabant, after about four hours of guided climbing, you get its rough shape on a calm clear day. Boats, beaches and snorkelling show you nothing. Ranked at how to see it.
Is the flight worth it?
If you came to Mauritius wanting that one photograph, yes, by helicopter, and go in the morning between May and November. If a flight is out of reach, the summit hike is a fraction of the cost and a better morning than most people expect; you just will not see the illusion. The pass itself is short and cloud can cancel the day. Both sides at is it worth it.
When is the best time?
Sun high, roughly 10:00 to 14:00, on a calm day with little swell; after heavy rain or a big south-westerly swell the plume goes muddy and the contrast dies. May to November is the dry, calm season on this coast; January to March is cyclone season and cancels most flights. Morning slots also beat the afternoon cloud over the gorges. Month by month at best time to see it.
Can’t make these dates?
Browse more available underwater waterfall mauritius and find one that fits your schedule — all with instant confirmation and free cancellation.
The underwater waterfall, explained
I spent six seasons on the helicopter apron at Sir Seewoosagur Ramgoolam airport, weighing passengers, allocating seats and telling people their slot had moved because of cloud over the gorges. I have flown the Le Morne loop more times than I can count, mostly in the jump seat. The question I got asked most was some version of: is it actually there? Here is the honest answer.
What it is
Mauritius sits on a shallow submarine shelf that goes no deeper than about 150 m. Off the south-west tip of the Le Morne peninsula, in the Black River district, that shelf ends and the seabed drops to more than 4,000 m. Currents pull sand and silt off the edge and it slides down the slope. That is the whole mechanism. No water moves vertically, the surface is flat, and there is nothing at the “bottom” but a long slope of settled sand. My grandmother in La Gaulette called it la rivière en bas la mer, the river under the sea, and she was nearer the truth than most of the internet.
Why the camera sees a waterfall
Shallow water over pale sand looks pale green; water over a 4,000 m drop looks nearly black. Where the two meet you get a hard colour edge, and the streaks of sand crossing that edge read, from a few hundred metres up, as water going over a cliff. Height and angle do the rest: from a boat the edge is a change of colour on the horizon, from the beach it is invisible, and from a mask and snorkel it is a slope. Which is why the doubt questions on is it real and how deep is it get the same short answer: yes, and it depends on how far up you are.
Where exactly
Roughly 20.47° S, 57.32° E, off the tip of the peninsula, beneath the 556 m face of Le Morne Brabant. The mountain has been a UNESCO World Heritage site since 2008 as the Le Morne Cultural Landscape, a refuge of maroons before slavery was abolished here in 1835. The lagoon and kite beach are on the north side, La Gaulette is 3 km up the coast road. From the airport at Plaine Magnien it is about 45–50 km and 60–75 minutes by taxi; from Port Louis about 50 km. Directions are at how to get to Le Morne.
The four ways to see it, and what each really shows
Helicopter. The only reliable way. Flights leave the airport helipad at Gate 3, cross the island and orbit the spot once or twice, a minute or two each time. Three flights on the tours page do this: the 40-minute airport flight, the 35-minute flight with hotel transfers, and the private 45-minute charter for up to five. Seaplane. Seaplanes do fly from the Le Morne lagoon, but the one bookable on GetYourGuide is based beside the LUX* Grand Gaube hotel on the north-east coast and flies Île aux Cerfs and the Grand Port reefs. It is a good flight and a cheaper way into the air per person; it does not see the waterfall. The summit. About four hours with an authorised guide, hands on rock for the last third, and from the top on a calm clear day you can make out the rough shape of the plume. Not the effect. Boat, beach, snorkel, dive. Nothing. The catamaran day is a fine day; it is not this.
The helicopter loop, minute by minute
Arrive at Gate 3 thirty minutes before your slot with your passport; the helipad is airside. You are weighed, seats are allocated for balance, and a party can be split across two aircraft because they carry four or six. Headsets on, and the first leg climbs inland to Grand Bassin, the crater lake at about 550 m with the 33 m Shiva statue at its gate, and Kanaka crater beside it. Then across the Black River Gorges, 6,574 ha of native forest, and out to Flic en Flac and down the west coast. Roughly halfway round the pilot calls Le Morne, banks over the tip, and you get the pass. Then Chamarel, the coloured dunes and the 100 m waterfall, the south coast, and home. Forty minutes, of which the sandfall is a few. The transfer flight comes at the same spot down the west coast from Tamarin instead. Full detail in the helicopter tour review.
Weather and light
You want the sun high, roughly 10:00 to 14:00, a calm sea and little swell. After heavy rain or a big south-westerly swell the plume goes muddy and the contrast dies, and no pilot can fix that. Cloud builds over the gorges in the afternoon, so mornings fly better. May to November is the dry season with the calm lee coast; January to March is cyclone season and cancels most flights. If it is cloudy over the gorges, move your date. Every flight here cancels free up to 24 hours before, and the operator reschedules or refunds when the weather does the cancelling. More at best time to see it.
Who should skip the flight
Anyone pregnant, anyone with a bad back, and anyone who gets motion sick in a car; the operator will refuse the first two and you will regret the third. Anyone whose budget the flight would break: the hike is a fraction of the price and a better morning than most people expect, and if you must fly, the seaplane is cheaper per person, just be clear it is a north-east flight. Families with children under seven, on the other hand, are better in the helicopter than the seaplane, which will not take them. Everyone else: pick a morning slot in the dry season, ask for a window, and read is it worth it if you are still on the fence.
Frequently asked questions
Is the underwater waterfall in Mauritius real?
The illusion is real; the waterfall is not. Off the south-west tip of Le Morne, currents carry sand and silt off the edge of the shallow shelf around Mauritius (about 150 m deep) and down a slope that drops to more than 4,000 m. From a helicopter the pale sand streaming into deep blue water looks exactly like water pouring over a cliff, but the sea surface is flat and no water falls. Full explanation at is the underwater waterfall real.
Is the underwater waterfall real or fake?
Neither word fits. The photographs are genuine and mostly unedited; what they show is a sandfall, not a waterfall. Sand slides down a submarine slope and, from a few hundred metres up, the eye reads pale-over-dark as falling water. Nobody has faked it, and nobody can swim to it. More at real or fake and how deep it is.
How does the underwater waterfall happen?
Mauritius sits on a shelf no deeper than about 150 m. At the shelf edge off Le Morne the seabed plunges past 4,000 m, and currents drag sand and silt off the shelf and down that slope. Where the shallow, sandy, bright water meets the deep, dark water you get a sharp colour edge, and the streaks of sand crossing it are the “falls”. It is a trick of depth and colour, explained at how deep is the underwater waterfall.
Can you visit the underwater waterfall?
You can fly over it, and that is the only way to visit it. The 40-minute airport helicopter and the 35-minute helicopter with hotel transfers both pass over the spot; the private 45-minute charter flies the same loop with the aircraft to yourselves. From the beach, a catamaran or a snorkel you see nothing, and the summit of Le Morne Brabant gives a rough outline at best. Ranked at how to see the underwater waterfall; all seven options on the tours page.
Is it safe to swim in the underwater waterfall?
There is nothing to swim in. The illusion exists only from altitude; at sea level it is open ocean beyond the reef off Le Morne, with the currents that go with a reef pass, and no view of anything. Swim inside the lagoon where the hotels and beaches flag safe water, and see the sandfall from a helicopter. The whole safety question, aircraft included, is at is the underwater waterfall safe.
How much does it cost to see the underwater waterfall?
It depends on whether you buy a seat or an aircraft, how many minutes you are in the air and whether transfers are included. The shared airport flight is priced per seat; the private charter is priced per aircraft for up to five, so it only works out cheaper per head if you fill it; the seaplane is the cheaper way into the air per person but flies the north-east coast and misses the waterfall; the summit hike is a fraction of any flight. Live prices are on each booking widget and at check availability; how to compare them is at what a flight costs.
How deep is the underwater waterfall?
The shelf it slides off is no deeper than about 150 m, and the drop-off it slides into goes past 4,000 m. There is no bottom in the sense of a plunge pool: the sand settles down a long slope. That depth contrast is the whole reason the illusion works. Numbers and a plain explanation at how deep is the underwater waterfall.
Is the underwater waterfall worth it?
By helicopter, on a clear morning between May and November, yes: you also cross Grand Bassin, the Black River Gorges and Chamarel, and the pass over Le Morne is a couple of minutes most people remember for years. It disappoints when the pass is rushed inside a long transfer window, when swell muddies the plume, or when cloud cancels the day. I weigh it by type of traveller at is the underwater waterfall worth it and review the airport flight at the helicopter tour review.
Still have questions? Email us [email protected]