The island's elongated shape also evokes the characteristic silhouette of this shell, reinforcing the relevance of the name. A coral formation, Crystal Rock, lies a few hundred meters to the west of the island and may also have inspired the name.

A Little-Known Health Past

The history of Île aux Bénitiers is marked by a little-known period: from 1792 to 1856, the islet served several times as a lazaretto during epidemics. A lazaretto was a health establishment where people suspected of having been exposed to contagious diseases, particularly the plague, cholera, or yellow fever, were quarantined.

Its natural isolation, its position in the lagoon, and its relative proximity to inhabited areas made it an ideal location for this function. For more than six decades, the island thus played a crucial role in the health protection of Mauritius, receiving the sick and suspected travelers arriving from ships.

This historical period has left few visible traces today, but it testifies to the strategic importance of this islet long before the rise of tourism.

Geography and Landscapes

Relief and Vegetation

Île aux Bénitiers has a remarkably flat landscape, in striking contrast to the surrounding mountains of southwest Mauritius. The island is covered with casuarina and coconut palms, creating an authentic tropical atmosphere.

The center of the island is home to a coconut grove commercially operated by a Mauritian company. This traditional plantation is part of Mauritius' agricultural history and provides a complementary local economic activity to tourism. However, this cultivated area remains private and is not open to visitors.

The island's shores are lined with filao trees (Casuarina equisetifolia), characteristic of tropical coastlines, whose slender needles rustle in the breeze. Their welcome shade offers natural refuge to visitors seeking shelter from the Mauritian sun.

Paradise Beaches

The foreshore, this strip of sand that encircles the island, remains public and magnificent. The beaches of Île aux Bénitiers are among the most beautiful in Mauritius, with their immaculate white, fine and powdery sand, stretching along turquoise waters of exceptional clarity.

The island's east coast offers a spectacular view of Le Morne Brabant, the iconic mountain and UNESCO World Heritage Site, which rises majestically to 556 meters. This panorama is one of the most photographed scenes in the Indian Ocean.

The western side, facing the coral reef, has slightly deeper and more turbulent waters, particularly appreciated by divers and snorkelers.

The Lagoon and the Seabed

The Morne lagoon is renowned for its white sandbanks, vast expanses of shallow sea where the white sand bottoms give the water incredible shades of blue-green. These chromatic variations, ranging from pale turquoise to deep blue, create a striking visual spectacle, particularly visible from the sky or from the heights of Le Morne.

The lagoon's depth generally varies between one and three meters around the island, allowing for safe swimming and excellent visibility for observing the seabed. It's even possible to reach the island on foot at low tide, provided you are accompanied by a guide familiar with the area.

The coral reefs surrounding the island are home to exceptional marine biodiversity. Brightly colored butterflyfish, surgeonfish, blue damselfish, triggerfish, scorpionfish, octopuses, and moray eels inhabit these underwater gardens. The coral formations themselves exhibit an impressive variety: branching corals, massive corals, tabular corals, brain corals…

The natural environment contains many marine species: tekteks, tipouls, achtam, sea urchins, oysters, clams, sea shrimp, testifying to the preserved ecological richness of the lagoon.

Crystal Rock: A Geological Marvel

Description and Training

This coral formation, hollowed out by the sea at its base, appears to float on the water. It is a large block of coral set like a jewel on the emerald of the lagoon, located a few hundred meters west of Île aux Bénitiers.

Contrary to what its name might suggest, it is not a volcanic rock but rather a coral concretion, the result of millennia of accumulated coral skeletons. Marine erosion has sculpted its base, creating the illusion of a rock suspended above the water.

On its surface, a few shrubs and low-lying vegetation have managed to take root, giving this formation a unique and picturesque character. This plant colonization, improbable on a coral substrate in the middle of the lagoon, testifies to the resilience of tropical nature.

A Natural Aquarium

The waters surrounding Crystal Rock form a veritable natural aquarium. The coral formation attracts a multitude of tropical fish that find refuge, food, and breeding grounds there. The shallow depth (generally between one and two meters) and the crystal-clear water offer ideal conditions for snorkeling.

You can take a boat trip around it and snorkel there, but you can't land on it because of the coral's sharp edges. This restriction also aims to preserve the integrity of this fragile formation, which is threatened by mass tourism.

Crystal Rock has become one of the most photographed sites in Mauritius, attracting dozens of boats daily. It is an essential stop on any excursion to Île aux Bénitiers.

Fauna and Flora

Terrestrial Biodiversity

The northern tip of the island offers opportunities to observe migratory birds such as the Long-billed Sanderling and the Grey Plover. These shorebirds travel thousands of kilometers during their migrations and stop over on the Mauritian shores to feed and rest.

Other bird species also frequent the island: terns, noddies, white-tailed tropicbirds, and various heron species. The mangrove and coastal vegetation areas provide valuable habitats for these bird populations.

The island's vegetation, though limited, plays a vital ecological role. Casuarina trees stabilize the soil, protect against wind and sea erosion, and create cooler microclimates. Coconut palms, beyond their economic value, provide perches and nesting sites for certain birds.

Marine Life

The waters around Île aux Bénitiers are home to exceptionally rich marine life. The coral reefs serve as nurseries for numerous fish species. Seagrass meadows (flowering plants adapted to the marine environment) stabilize the sediments and provide feeding grounds for sea turtles and certain fish.

The sandy bottoms, far from being desert-like, are home to specialized species: lizardfish, stingrays, sea cucumbers, and an invisible but crucial microfauna for the balance of the ecosystem.

The Dolphins of Morne

Between Tamarin Bay and Le Morne, dolphins are a daily sight. Two main species frequent these waters: bottlenose dolphins (Tursiops truncatus) and spinner dolphins (Stenella longirostris), famous for their spectacular aerial acrobatics.

These resident populations use the lagoon as a resting and feeding area. They have become a major tourist attraction, although this raises important ethical questions regarding animal welfare and the disruption of their natural behaviors.

The regular presence of cetaceans in this area is explained by the geographical configuration (protection offered by the lagoon), the abundance of prey, and the gradual depth of the waters allowing dolphins to rest in safe areas.

Land Status and Access

The island is privately owned, which distinguishes it from many other Mauritian islands that fall under public ownership. However, in accordance with Mauritian legislation on the public maritime domain, the foreshore remains public, guaranteeing free access to the beaches for all.

This particular legal situation has sometimes been a source of tension. Hotel construction projects have been considered in the past, sparking opposition from environmental organizations such as SAPO (Solidarité Anti-Pollution Ouest), which feared the ecological and economic impacts of such infrastructure.

The island is accessible from La Gaulette by local fishermen who provide the crossing, as well as by tourist operators based in Rivière Noire, Flic-en-Flac, or Le Morne offering excursions by speedboat or catamaran.

Activities and Attractions

Swimming and Relaxation

The beaches of Île aux Bénitiers offer ideal conditions for swimming. The shallow, warm (temperatures ranging from 24°C in winter to 28°C in summer), and calm waters of the lagoon are perfect for families with children.

The shade of the casuarina trees provides protection from the particularly intense tropical sun in Mauritius. These natural shaded areas are popular for reading, napping, or picnicking, offering a welcome alternative to sun exposure.

The fine white sand, with an almost powdery texture, comes mainly from the erosion of corals and shells, crushed by the action of the waves and transformed into tiny calcareous particles.

Snorkeling and Diving

The seabed around the island is one of the main attractions. Several snorkeling spots are particularly recommended:

Around Crystal Rock The shallow, crystal-clear waters are home to an impressive concentration of tropical fish. The coral formation itself attracts numerous species.

The coral reef : About two kilometers from the island, this spectacular barrier offers even richer biodiversity, with larger corals and more diverse fauna.

The lagoon reefs Closer to the island, these scattered coral formations are accessible targets even for beginner snorkelers.

Basic equipment (mask, snorkel, fins) is usually provided by tour operators. Underwater visibility is excellent for most of the year, often exceeding 20 meters.

Wildlife Observation

Birdwatching is a popular activity, particularly in the northern part of the island where migratory birds are more numerous. The best time for observation is between November and March, during the migration season.

Watching dolphins from boats or during swimming sessions with these cetaceans is a highlight for many visitors. However, it is important to choose operators who respect the animals and avoid invasive practices such as chasing or surrounding groups.

The Craft Market

A small craft market has sprung up along the beach, in the shade of the casuarina trees. The stalls offer a variety of products: Mauritian handicrafts (vacoa baskets, wood carvings, textiles), local spices (vanilla, cinnamon, chili), souvenirs, and cold drinks (tropical fruit juices, cocktails).

Although popular with tourists, this market offers a lively atmosphere and allows visitors to take home some authentic souvenirs. It also provides a source of income for local artisans and shopkeepers in La Gaulette and the surrounding villages.

Walk and Exploration

A complete walk around the island takes little more than an hour, allowing you to explore its different facets. The stroll along the beach offers ever-changing views of Le Morne Brabant, the lagoon, and the Mauritian coast.

Early morning or late afternoon visitors benefit from greater tranquility, avoiding the crowds of peak hours (generally between 10am and 3pm) when organized excursions converge on the island.

Environmental Issues

Pollution: An Ongoing Battle

The many tourist boats that come to the island for picnics leave behind waste every day: greasy papers, plastic bags and bottles, glasses, hidden under the filao leaves.

For the past 15 years, once a month, about fifteen villagers from La Gaulette have been going to the island to clean it up. This citizen initiative, launched by the organization SAPO (Solidarité Anti-Pollution Ouest), illustrates the commitment of local communities to preserving their environment.

On average, 25 pleasure boats with 4 to 10 people dock on the island each day, plus nearly 5 catamarans per day with about twenty people on board, making approximately 300 tourists daily, not counting fishermen and Mauritians on excursions.

This massive influx of visitors generates considerable pressure on the island's fragile ecosystem. Waste management, soil erosion, trampling of vegetation, and disturbances to wildlife constitute major challenges.

Marine Life Protection

Water sports, while the island's main attraction, can also threaten the ecological balance. Repeated boat anchoring damages corals, engine noise disturbs dolphins, and excessive human interaction with marine wildlife alters natural behaviors.

Coral reefs, already weakened by global warming and ocean acidification, are suffering additional stresses related to tourism: physical contact, harmful chemical sunscreens, resuspension of sediments.

Towards Sustainable Tourism

The recent transformation of Île aux Bénitiers into an eco-responsible destination marks a crucial turning point. Following a large-scale cleanup operation in 2025, the island reopened with a strengthened regulatory framework limiting the number of authorized operators to 55, selected according to strict environmental respect criteria.

This regulation aims to reconcile economic development and ecological preservation, proving that another tourism model is possible. Mandatory training in marine protection and food safety for all operators guarantees high quality standards.

Best Time to Visit

The Mauritian climate allows you to visit Île aux Bénitiers all year round, but some periods are more favorable. The southern winter (May to October) offers generally dry and sunny weather, with pleasant temperatures (20-25°C) and calmer seas.

The southern summer (November to April) is hotter and more humid, with a risk of cyclones between January and March. However, this season also has its advantages: warmer waters (ideal for extended snorkeling), migratory bird watching, and slightly fewer tourists outside of school holidays.

For dolphin watching, the months of May to October generally offer better underwater visibility and more stable weather conditions.

Practical Information

How to get there

From La Gaulette This is the nearest departure point. Local fishermen offer crossings in traditional dugout canoes or small motorized boats. The crossing only takes a few minutes.

Organized excursions Many operators based in Rivière Noire, Flic-en-Flac, Tamarin or Le Morne offer speedboat or catamaran trips which generally include dolphin watching, snorkeling at Crystal Rock, a barbecue lunch on the island, and sometimes other activities.

By kayak Guided sea kayaking excursions are offered from the Le Morne region, providing a more sporty and ecological approach to the island.

Practical Tips

Sun protection The Mauritian sun is very intense. High sun protection, a hat, and light, long-sleeved clothing are recommended. Opt for mineral sunscreens (without oxybenzone or octinoxate) which are less harmful to coral reefs.

Hydration Bring plenty of water, especially if you plan to hike or snorkel. Dehydration can occur quickly in the tropics.

Respect for the environment : Leave no waste, do not touch the corals, do not feed the fish, respect distances with dolphins (at least 30 meters).

Water safety Even in the shallow lagoon, wear a life jacket if you are not a strong swimmer. Be careful of sea urchins (water shoes recommended), sharp coral, and currents near the reef.

Photography A waterproof camera or protective cover will allow you to capture the underwater wonders. Crystal Rock offers exceptional photographic opportunities, particularly in the morning or late afternoon light.

Conclusion

Île aux Bénitiers embodies the unspoiled beauty of the Indian Ocean. A small, accessible yet fragile paradise, it represents both an ecological treasure and a major tourist destination in Mauritius. Its recent evolution towards a sustainable tourism model reflects a growing collective awareness of the need to protect this exceptional natural heritage.

Whether you come for its pristine beaches, crystal-clear waters, spectacular seabed, or simply to escape the everyday, Île aux Bénitiers offers an authentic and memorable experience. Provided it is respected and its preservation is contributed to, it will continue to enchant future generations, remaining the jewel of the Indian Ocean that it has always been.