Shangani Reef - Mafia Island
Let’s address the elephant in the room first: those 67 steps back up from Thousand Steps feel like a thousand when you’ve got a tank on. But trust us, the effort is worth it. Once you’re in, the reef here is just classic Bonaire: a beautiful wall that starts shallow and just keeps going. We love dropping in around midday, when the sun lights up the shallows and you can watch parrotfish crunching on the coral, their chewing audible if you listen close. Our favourite part is the upper reef, maybe 5-8 metres deep, where the finger coral and mustard hill coral are just thriving. Look closely for those tiny, perfectly camouflaged island gobies perched on the sponges. We often spot coney and hourglass basslets hovering in the crevices, and if you’re patient, a hogfish might cruise by. It's a relaxed drift, gentle current usually carrying you south. This site is brilliant for photographers who love macro, but the wide-angle shots of that healthy wall are pretty special too.
- Location
- Mafia Island, Tanzania, Indian Ocean & East Africa
- Coordinates
- -10.229200, 40.178100
- Type
- reef
Marine Protected Area: Mangrove
Best Time to Dive in Mafia Island
The warmest water temperatures in Mafia Island occur in January, averaging 28.8°C. The coolest conditions are in December at 28.8°C.
Monthly Water Temperatures
- January: 28.8°C (air: 27.8°C)
- February: 28.8°C (air: 28.0°C)
- March: 28.8°C (air: 27.8°C)
- April: 28.8°C (air: 27.0°C)
- May: 28.8°C (air: 26.9°C)
- June: 28.8°C (air: 26.0°C)
- July: 28.8°C (air: 25.2°C)
- August: 28.8°C (air: 25.0°C)
- September: 28.8°C (air: 25.3°C)
- October: 28.8°C (air: 26.1°C)
- November: 28.8°C (air: 27.0°C)
- December: 28.8°C (air: 27.7°C)
Nearby Dive Sites in Mafia Island
- Bwejuu Wall (wall)
- Bwejuu Wall (wall)
- Chekechea (reef)
- Chole Reef North (reef)
- Coral Gardens (reef)
- Coral Islands (reef)
- Corinne’s Reef (reef)
- Critters Alley (reef)
- Cryptomania (reef)
- Dindini Wall (wall)
- Hulls Rock (reef)
- Jina Wall (reef)
- Juani North (reef)
- Juani South (wall)
- Kasa (cave)
Nearest Dive Centres to Shangani Reef
- Action for Oceans Eco Dive - ["PADI"]
- Blue World Diving - ["PADI"]
- Mafia Island Diving ltd - PADI
Marine Life in Mafia Island
Home to 165 recorded species including 94 hard corals, 63 reef fish, 3 sharks & rays, 2 jellyfish, 1 other, 1 whales & dolphins.
Notable Species
- Green Turtle (Chelonia mydas)
- Allison's Tuna (Thunnus albacares) - Reef Fish
- Whale Shark (Rhincodon typus) - Sharks & Rays
- Stripy (Katsuwonus pelamis) - Reef Fish
- Bigeye tuna (Thunnus obesus) - Reef Fish
- Bullet Mackerel (Auxis thazard) - Reef Fish
- Tuna (Thunnus alalunga) - Reef Fish
- Sperm Whale (Physeter macrocephalus) - Whales & Dolphins
- Tail-spot Squirrelfish (Sargocentron caudimaculatum) - Reef Fish
- Cauliflower coral (Pocillopora verrucosa) - Hard Corals
- Smooth cauliflower coral (Stylophora pistillata) - Hard Corals
- Stony coral (Porites cylindrica) - Hard Corals
- Stony coral (Porites lutea) - Hard Corals
- Larger star coral (Favites pentagona) - Hard Corals
- Staghorn coral (Acropora aspera) - Hard Corals
- Staghorn coral (Acropora listeri) - Hard Corals
- Birdsnest coral (Seriatopora caliendrum) - Hard Corals
- Thin birdsnest coral (Seriatopora hystrix) - Hard Corals
- Staghorn coral (Acropora polystoma) - Hard Corals
- Closed brain coral (Leptoria phrygia) - Hard Corals
Recommended Packing List for Shangani Reef
Based on average water temperature of 28.8°C.
- Shorty or Rashguard - warm 29°C water needs minimal exposure protection
- Mask - essential for every dive
- Fins
- BCD - buoyancy compensator
- Regulator - your most safety-critical piece of gear
- Dive Computer - tracks depth, time, and NDL
- Surface Marker Buoy (SMB) - essential for boat pickups
- Dive Torch - useful for crevices and colour at depth
- Underwater Camera - capture your diving memories