Ile aux Benitiers — literally "Island of Holy Water Shells" — sits inside the broad, protected lagoon that stretches along the south-western coast of Mauritius, roughly opposite the laid-back village of La Gaulette. Covering just a few hectares, this uninhabited island punches well above its weight when it comes to natural beauty. The lagoon water here is famously calm and shallow, making it one of the most inviting spots on the entire island for a day of swimming, floating, and snorkeling. Accessible only by boat, the journey itself is part of the adventure — you may well be greeted by spinner dolphins playing in the bow wave before you even arrive.
Most visitors reach Ile aux Benitiers as part of an organised boat excursion departing from Le Morne, La Preneuse, or Tamarin. Half-day and full-day trips are widely available and typically include snorkeling equipment, a freshly prepared Mauritian barbecue lunch on the beach, and time to simply explore the island on foot. The pace is wonderfully unhurried — mornings are ideal for snorkeling when the light penetrates deep into the water column, while afternoons are perfect for lounging on the white sand or wading in the shallows.
Because the lagoon is sheltered by the outer reef, currents are gentle and visibility is generally excellent, often stretching beyond 15 metres on a good day. This makes Ile aux Benitiers particularly well-suited to intermediate snorkelers — those who are comfortable in the water and ready to venture a little further from the shoreline to discover the richer reef sections. Children and nervous swimmers are still very welcome; the sandy-bottomed shallows close to the beach offer their own share of colourful surprises.
Peer beneath the surface around Ile aux Benitiers and you enter a living aquarium. The seagrass meadows that carpet the sandy lagoon floor are nursery grounds for juvenile fish, and it is not unusual to see small green sea turtles gliding gracefully through the grass in search of a meal. These gentle reptiles are perhaps the most memorable encounter on any snorkeling trip here, and spotting one just a few metres away is an experience that stays with you long after you have dried off.
Venturing towards the coral patches, you will encounter clouds of sergeant-major fish in their bold black-and-yellow stripes, curious parrotfish nibbling at coral, and the occasional elegant lion fish tucked into a crevice (admire from a respectful distance). Moorish idols, blue-green chromis, and various wrasse species add flashes of neon colour to every glance. If you are lucky, a squadron of spotted eagle rays may cruise past in elegant formation — a sight that never fails to draw gasps of delight from snorkelers of all ages.
The west coast of Mauritius enjoys its calmest, sunniest weather between May and November, when the south-east trade winds are deflected by the island's mountainous spine, leaving the lagoon glassy and serene. October and November are particularly special, offering warm water temperatures, outstanding visibility, and a higher chance of dolphin encounters early in the morning. The summer months (December to April) can bring occasional rain showers and slightly choppier conditions, though many days remain perfectly suitable for a boat trip. Always check the weather forecast on the morning of your excursion and follow the advice of your local boat operator.
Ile aux Benitiers is accessible exclusively by boat — there is no bridge or public ferry. The most convenient departure points are the small fishing harbours at La Preneuse and Le Morne, both a short drive from the popular resort town of Flic en Flac. Numerous local operators offer organised day trips that handle all the logistics, including boat hire, snorkeling gear, and catering. Alternatively, if you prefer a more private experience, independent boat rental is available through several companies along the west coast, allowing you to set your own itinerary and pace. Always book in advance during the peak tourist season (July–August) to secure your preferred time slot.
Ile aux Benitiers is also known among scuba divers for its underwater landscapes. Explore nearby dive sites and dive centers on DivingMauritius.