Cathedral
Protected Area
Black River Fishing Reserve
Why dive here
With 434+ marine species recorded in the area - including barracuda, blue sharks, dolphins, dwarf minke whales and great white sharks - Cathedral offers some of Flic en Flac & West Coast's richest cave diving. Water ranges 25-29°C, warmest February, March, April.
Cathedral is one of those sites we always make time for when we're in Mauritius. Dropping down to 28 meters, it’s certainly an advanced dive, but the reward is substantial. You’re not here for vast coral gardens; this spot is all about the structure, a dramatic volcanic rock cavern. When the conditions are right, usually around mid-morning, the light shafts punching through the roof are incredible, almost tangible in the water. It's a genuinely atmospheric dive, the kind that makes you feel tiny and utterly immersed. Inside, we often find ourselves drifting slowly, letting our eyes adjust to the dim light. Look for the quieter residents like the Longnose Hawkfish perched on sea fans, or the shy Mimic Blennies tucked into crevices. Out in the open, schools of Glasseye Snappers often hover, their eyes like marbles catching the diffused light. We've even been lucky enough to spot a Blue Marlin on the outer reef wall a couple of times, a real heart-stopper. It’s not a drift dive, so you can really take your time exploring the nooks and crannies. This dive is perfect for photographers chasing those iconic light beam shots or anyone who appreciates dramatic underwater topography.
Typical Cathedral Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.
Always perform a 3-minute safety stop at 5m before surfacing.
Nearest Dive Centres to Cathedral
Dive shops near Cathedral
Euro-Divers - Club Med Albion
Ticabo
Sundivers Ltd
SeaUrchin Diving Center Mauritius
Nemo Diving Centre
Tamarin Ocean Pro Diving Ltd
Reviews for Cathedral
Conditions
Ocean conditions, forecast and tides for Cathedral
Cathedral Ocean Conditions
Monthly averages for Cathedral, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (-20.25, 57.38) (7km away)
October Averages
Sea Temperature
25°C
77°F · Range: 24.2–27.5°C
Air Temperature
24°C
76°F
Wind Speed
7.13 m/s
13.9 knots
Atmospheric Pressure
1017.9 hPa
Based on 4 years of monitoring data · Data sources: Open-Meteo marine data
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