The largest lagoon in the Caribbean
Grand Cul-de-Sac Marin
The largest lagoon in the Caribbean, sheltered by a 25-kilometre-long coral reef stretching from Sainte-Rose to Port-Louis. A maze of islets, mangroves and protected seabeds, to be explored on a full-day or half-day organised trip, departing from Guadeloupe.
Experts from GuadeloupeThe widest choice by destinationLocal support 7 days a week
Why visit the Grand Cul-de-Sac Marin?
The Grand Cul-de-Sac Marin is the largest lagoon in the West Indies: a 25-kilometre-long coral reef, a mosaic of islets and mangroves, and seabeds that are home to a diverse range of wildlife. You can explore it on an organised full-day or half-day excursion.
A vast lagoon
The largest lagoon in the Caribbean, sheltered by a 25-kilometre-long coral reef.
A string of islets
Caret, Fajou, La Biche, Macou, Îlet Blanc… all stops along the way in the lagoon.
Mangrove & nature reserve
Mangroves, seagrass beds and protected areas at the heart of the Grand Cul-de-Sac Marin.
Choose your outing at Grand Cul-de-sac Marin
All outings selected and coordinated by your local agency. Filter by what you're after.
Motor catamaran
Caret Islet and Fajou Islet by motor catamaran
Enjoy a meal prepared on board, take in the views from the upper deck and take a dip in the crystal-clear waters of the lagoon.
RelaxationNature
Gosier
from100 €
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Sailboat/Catamaran
Caret and Fajou on a sailing catamaran
A day of total relaxation in the calm, peaceful waters of Grand-Cul-de-Sac-Marin
RelaxationNature
Baie Mahault
from115 €
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Fast boat
A trip to Caret Islet with Adams
Whether with family or friends, discover all that the Grand Cul-de-Sac Marin has to offer in a friendly atmosphere.
RelaxationNatureCulture & Heritage
Sainte-Anne
from110 €
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Fast boat
Day trip – Îlet-Caret and the mangrove swamp
Recommended by Guadeloupe National Park and Le Routard
RelaxationNatureCulture & Heritage
Sainte-Rose
from85 €
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Fast boat
Half-day – Îlet-Caret and the mangrove forest
Recommended by the National Park and *Le Routard*, this excursion combines nature, culture and culinary delights.
RelaxationNatureCulture & Heritage
Sainte-Rose
from50 €
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Sailboat/Catamaran
16-passenger sailing catamaran – Petit-Canal / Grand Cul de Sac
Mangroves, coral reefs and white sandy beaches
RelaxationNature
Petit Canal
from100 €
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Fast boat
Grand Cul-de-Sac Marin – day trip
Grand Cul-de-Sac Marin with Florent, your local guide
RelaxationNatureCulture & HeritageBudget-friendly
Sainte-Rose
from80 €
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Fast boat
Half-day Grand Cul-de-sac Marin trip – Florent
A half-day nature excursion with Florent, exploring the mangroves and the lagoon
RelaxationNatureCulture & Heritage
Sainte-Rose
from50 €
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Fast boat
Half-day tour of the mangroves, islets and snorkelling
Birdwatching and marine wildlife spotting on this excursion into the heart of the lagoon
RelaxationNatureCulture & Heritage
Sainte-Rose
from70 €
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Fast boat
A day out exploring mangroves, islets and diving
Birdwatching and marine wildlife spotting on this excursion into the heart of the lagoon
RelaxationNatureCulture & HeritageVIP
Sainte-Rose
from120 €
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Fast boat
Grand Cul-de-Sac Marin – Meals right by the water’s edge, snorkelling & relaxation
A meal in the water, snorkelling, music and relaxation: the perfect combination under the lagoon sun.
RelaxationNature
Gosier
from115 €
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Fast boat
The Grand Cul-de-Sac Marin with Jean-Luc – Nature, lagoon & togetherness
A day full of discoveries… my head is brimming with memories.
RelaxationCulture & HeritageNatureBudget-friendly
Gosier
from95 €
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Fast boat
Private tour in a small group of up to 5 people
A private, educational excursion to discover the local flora and fauna
NatureRelaxationBudget-friendlyLocation bateaux
Grand Cul-de-sac Marin
from320 €
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Fast boat
Half-day tour of the Grand Cul-de-Sac Marin in Saintoise
An authentic walk in the Saintoise style, in the heart of the Grand Cul-de-Sac Marin
NatureBudget-friendlyMangrove
Morne-À-l'Eau
from45 €
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Fast boat
Mangrove, large marine cove, coral reef, sandy headland
Explore the mangrove forest along the Canal des Rotours, Macou Islet and the Fajou Nature Reserve with a passionate guide.
RelaxationNatureMangrove
Morne-À-l'Eau
from65 €
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Fast boat
Ilet Caret + La Biche or Pointe Sable – A day out in a small group
A relaxed and gourmet excursion in the Grand Cul-de-Sac Marin lagoon.
NatureRelaxation
Sainte-Anne
from110 €
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A Day in Grand Cul-de-sac with Julia
Discovering the natural environment and biodiversity of the Grand-cul-de-sac-marin
RelaxationNature
Gosier
from135 €
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Half a day at Grand Cul-de-sac with Julia
Discovering the natural environment and biodiversity of the Grand-cul-de-sac-marin
RelaxationNature
Gosier
from75 €
ViewFast boat
Water Adventure in the Grand Cul-de-Sac Marin – Departure from Gosier
Amidst mangroves, beaches and reefs, enjoy a unique immersion in the heart of the lagoon
RelaxationNature
Gosier
from110 €
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Fast boat
Coral reef, mangroves and lagoon islets – a day trip
A day exploring the lagoon, with drinks by the water’s edge
RelaxationNature
Baie Mahault
from110 €
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Fast boat
Coral reef, mangroves and lagoon islets – half-day tour
Half-day lagoon tour with an aperitif with your feet in the water
RelaxationNature
Baie Mahault
from70 €
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Motor catamaran
La Biche Islet and Caret Islet by motor catamaran
Discover the lagoon’s rich wildlife on a comfortable catamaran
RelaxationNature
Baie Mahault
from115 €
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Fast boat
Mangroves and 5 Paradise-like Islets – Day Trip
The mangrove forest, a shipwreck and five islets in a single day – for a truly comprehensive experience
RelaxationNature
Sainte-Rose
from98 €
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Fast boat
Grand-Cul-de-Sac-Marin – Half-day
The mangrove: a shipwreck in the lagoon for an unforgettable experience
RelaxationNature
Sainte-Rose
from49 €
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Fast boat
Grand Cul-de-sac Marin Excursion – All-Inclusive Tour
RelaxationNature
Gosier
from110 €
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Bateau électrique
Eco-tour – Mangroves and islets by solar-powered electric boat – Full day
A leisurely stroll around the lagoon, suitable for everyone
Gift ideaRelaxationNatureRomantic
Sainte-Rose
from95 €
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Bateau électrique
Eco-tour – Mangroves and islets by solar-powered electric boat – Sunset
A leisurely stroll around the lagoon, suitable for everyone
RelaxationNature
Sainte-Rose
from60 €
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Fast boat
Grand Cul-de-Sac Marin Immersion – Mangroves, Islets & Snorkelling – Full Day
Comfort, a friendly atmosphere and the great outdoors: the ideal day out in the Grand Cul-de-Sac Marin
RelaxationNature
Gosier
from110 €
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Boat with skipperFast boat
A large cul-de-sac with a local professional sailor
A small-group excursion led by a local, a former sailor and a lover of the sea.
RelaxationNature
Gosier
from110 €
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Motor catamaran
Motor Catamaran – Barrière de Corail, Caret, Fajou
Full programme including a visit to the mangroves, the islets, snorkelling and an aperitif with your feet in the water at Caret Islet
RelaxationNature
Gosier
from115 €
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Fast boat
In-Depth Tour of Grand Cul de Sac
Setting off from Le Gosier, discover the mangroves, the islets and the coral reef with a local, enthusiastic crew.
RelaxationNature
Gosier
from110 €
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Fast boat
Snorkelling in Grand Cul-de-Sac Marin with a local fisherman from Désirade
Culture and nature with an experienced fisherman
Gift ideaRelaxationRomanticNature
Gosier
from115 €
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Full-day private hire
The Grand Cul-de-Sac Marin as a private tour, at your own pace
RelaxationNature
Baie Mahault
from700 €
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Fast boat
Caret Day Trip: departing from Baie-Mahault, Gosier and PAP for cruise passengers
Discover the Grand Cul-de-Sac Marin with this innovative package
RelaxationNature
Baie Mahault
from95 €
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Boat with skipperFast boat
Mangrove Day, Caret, shipwreck
Relaxation, exploration and local flavours are on the agenda
Gift ideaBudget-friendlyNatureRelaxation
Sainte-Rose
from100 €
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Fast boat
Half-day mangrove tour, Caret, shipwreck
Relaxation, exploration and local flavours are on the agenda
RelaxationNatureBudget-friendly
Sainte-Rose
from49 €
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Boat with skipper
An educational tour of the mangroves and lagoon in 7 stages, including 4 snorkelling stops
Explore the unspoilt natural beauty of the lagoon with passionate, qualified guides
RelaxationNatureCulture & Heritage
Sainte-Rose
from59 €
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Mangrove
Mangrove Tour + Snorkelling on the coral reef
Steer your boat through the mangrove swamp
NatureRelaxationCulture & Heritage
Sainte-Rose
from49 €
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Boat with skipperFast boat
Creole Immersion Day and a tour of the islets
Discover marine life with a passionate fisherman
RelaxationBudget-friendlyNatureGift idea
Gosier
from125 €
View
A day of snorkelling, islets and mangroves – Grand Cul-de-Sac
Snorkelling, nature and a Creole barbecue – with the captain’s smile to boot
RelaxationRomantic
Gosier
from110 €
View
Kayak
Mangrove and Coral Kayaking in the Grand Cul-de-Sac Marin – Full Day
A fun and peaceful walk, suitable for all abilities.
Gift ideaNatureMangroveWatersports
Morne Rouge
from75 €
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Boat with skipper
Half-day Grand Cul-de-sac Marin tour
Mangroves, Caret Islet and snorkelling at Grand Cul-de-Sac Marin – a half-day trip
Gift ideaNature
Gosier
from75 €
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Private Catamaran Sailing Trip to Caret
The Grand-Cul-de-Sac-Marin on a sailing catamaran, exclusively for your group
Gift ideaRelaxationRomanticNature
Baie Mahault
from2150 €
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Motor catamaran
Half-day excursion: islets and mangroves in 7 stages
Discover the treasures of the Grand Cul-de-Sac Marin
RelaxationNature
Sainte-Rose
from50 €
View
Fast boat
Gwadaventure – Half-day Grand Cul-de-Sac Marin tour
Mangroves and lagoon at Grand Cul-de-Sac Marin with Gwadaventure
Sainte-Rose
from50 €Instant confirmation
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Kayak
Kayaking – Half-day ‘mangrove islet and lagoon’ tour
A unique experience combining nature, legends and a warm, friendly atmosphere
NatureCulture & HeritageRelaxationMangroveWatersports
Vieux-bourg
from38 €
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Boat with skipper
Recreational and private lure fishing in the mangroves – State-certified guide
Recreational fishing, sharing and nature for everyone
NatureRelaxationGift ideaSport fishing / Big game fishing
Gosier
from70 €
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Glass-bottom boat
Mangrove Tour by Glass-bottomed Boat – Half-day
Explore the treasures of the Grand Cul-de-Sac Marin on board a glass-bottomed boat
RelaxationMangrove
Petit Canal
from45 €
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Glass-bottom boat
Mangrove Tour by Glass-bottomed Boat – Full Day
An eco-cruise to explore the seabed and the mangrove forest
RelaxationNatureMangrove
Petit Canal
from70 €
View
Paddleboard
Mangrove Walk and Paddleboard Trip to a Small Island
Paddleboarding trip in the Grand-cul-de-sac-marin and its mangrove forest
Gift ideaBudget-friendlyRomanticSportyMangroveWatersports
Morne-À-l'Eau
from45 €
View
Kayak
Mangrove or coral kayaking in the Grand Cul-de-Sac Marin – Half-day
A fun and peaceful walk, suitable for all abilities.
Gift ideaNatureMangroveWatersports
Morne Rouge
from38 €
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Sailboat/Catamaran
Sailing Caret
A day’s sailing, combining nature, relaxation and exploring the marine world
NatureRelaxation
Baie Mahault
from98 €
View
Fast boat
Half-day mangrove tour, Grand Cul-de-Sac Marin, coral reef, Pointe Sable – Private tour
Explore the mangrove forest along the Canal des Rotours, Macou Islet and the Fajou Nature Reserve with a passionate guide.
RelaxationNatureMangrove
Morne-À-l'Eau
from600 €
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PaddleboardSurfing
Electric surfboards and paddleboards in Sainte-Rose
A unique water sport in Guadeloupe
WatersportsEquipment rental
Bouillante
from30 €
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Sailboat/Catamaran
16-passenger sailing catamaran – Petit-Canal / Grand Cul de Sac – Private hire
Mangroves, coral reefs and white sandy beaches, with your own private group
RelaxationNature
Petit Canal
from1600 €
ViewGood to know before you go
Get there
On an organised boat trip, either a full day or a half-day, departing from Guadeloupe.
Duration
A full day or half a day, depending on the trip you choose.
With the family
There are several outings suitable for families · conditions vary depending on the outing.
Weather & season
The trip is confirmed, subject to sea conditions.
On site
Sailing between the islets, snorkelling and exploring the mangrove swamp.
Well-preserved setting
Islets and protected areas: some can be explored without going ashore. Observe without taking anything.
Grand Cul-de-sac Marin in pictures
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Need help choosing or organising your outing? Our local team is on hand to help you.
Frequently asked questions
To prepare calmly for your outing in Grand Cul-de-sac Marin.
Organised boat trips, either full-day or half-day, departing from several ports in Guadeloupe. You can also go kayaking or stand-up paddleboarding in the mangroves.
Need help choosing your outing?
Our local team guides you towards the outing that suits you — before, during and after your stay.