
Bigorno Diving Center
★ 5/5 (548 reviews)
4.7 km away as the crow flies
Trou aux biches · Mauritius · Indian Ocean
Max. depth · 40 mBegin your dive on a sandy expanse at 33 metres, where eagle rays drift in the current, setting the stage for a descent to 40 metres around vibrant coral pinnacles.
Your journey at Stenopus Reef begins over a sandy bottom, settling in at around 33 metres. Here, the first encounter often sets the tone: a silent ballet of eagle rays (Aetobatus narinari) often seen holding position in the current, their wings seemingly motionless as they survey the deeper waters. This initial view gives you a sense of the site's unique character – an oceanic fringe where larger pelagics feel at home.
From this sandy platform, two distinct pinnacles rise, acting as beacons of marine life. These structures are truly a spectacle, beautifully decorated with large, robust orange fan corals and softer corals waving gently in the flow. Amidst these, you’ll discover the delicate, brittle branches of glass coral, Tubastrea micrantha, creating intricate patterns that catch the light, offering a vibrant contrast to the deeper blues.
As you explore the pinnacles, the surrounding water buzzes with activity. Schools of blue fusiliers (Pterocaesio chrysozona) and yellow-back fusiliers (Caesio xanthonota) form shimmering clouds, their movements often indicating the presence of predators. Keep your eyes sharp for barracudas (Sphyraena barracuda) and various trevallies (Carangidae spp.) that patrol the edges of the schools, always ready to strike.
The dive profile at Stenopus Reef allows for a deeper exploration, descending towards the site's maximum depth of 40 metres. Even at these depths, the ecosystem remains rich and active, with various reef inhabitants finding refuge among the corals. The deeper sections often bring different species into view, complementing the pelagic encounters you've enjoyed closer to the sand.
Beyond the schooling fish and apex predators, the sandy bottom and the nooks of the pinnacles provide habitat for other species. You might find stingrays (Dasyatidae spp.) resting camouflaged on the sand, or observe them cruising gracefully over the contours of the reef. Their presence adds another layer to the predatory dynamics of Stenopus Reef, making every corner worth a close inspection.
The overall experience of Stenopus Reef is defined by its blend of vibrant coral structures and significant pelagic activity. The current here is variable, which often enhances the dynamic feel of the dive, bringing nutrients and attracting a broader range of marine life. This drift allows for a gradual ascent, often concluding around 10 metres, providing ample time to decompress and observe the shallower reef inhabitants.
This dive site is accessible to divers of all levels, offering a depth range between 25 and 40 metres. Currents at Stenopus Reef are variable, so planning your profile and ascent is important. The north-west coast of Mauritius offers a comfortable diving window year-round, with water temperatures ranging from 23 to 30°C.

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