Olang Sanctuary - Dumaguete
Olang Sanctuary is a mellow reef site just off Dumaguete, perfect for a relaxed dive. We’ve always found it a good spot to ease back into things, especially if you haven't been in the water for a bit. The reef here, topping out at 21m, is an easy depth for beginners or anyone looking for a longer bottom time. You’ll drift past patches of hard corals and anemones, with plenty of small reef fish flitting about. It’s a comfortable, unchallenging dive, and a nice way to spend an hour underwater.
- Location
- Dumaguete, Philippines, Southeast Asia
- Coordinates
- 9.211300, 123.677000
- Type
- reef
- Maximum Depth
- 21m
- Difficulty
- Beginner
Marine Protected Area: Takbal-Bato Marine Sanctuary
Best Time to Dive in Dumaguete
The warmest water temperatures in Dumaguete occur in January, averaging 26.8°C. The coolest conditions are in December at 26.8°C.
Monthly Water Temperatures
- January: 26.8°C (air: 26.7°C)
- February: 26.8°C (air: 26.6°C)
- March: 26.8°C (air: 27.3°C)
- April: 26.8°C (air: 28.1°C)
- May: 26.8°C (air: 28.5°C)
- June: 26.8°C (air: 27.8°C)
- July: 26.8°C (air: 27.4°C)
- August: 26.8°C (air: 27.6°C)
- September: 26.8°C (air: 27.6°C)
- October: 26.8°C (air: 27.3°C)
- November: 26.8°C (air: 27.3°C)
- December: 26.8°C (air: 27.0°C)
Nearby Dive Sites in Dumaguete
- Apo Island Sanctuary (drift)
- Apo Island Sanctuary (reef)
- Arco Point - 20m
- Atlantis Reef (reef)
- Atmosphere House Reef (reef)
- Baha reef - 19m (reef)
- Bahura
- Balicasag
- Banca Wreck (wreck)
- Basak - 19m
- Basak South
- BIGBOSS Bohol House reef - 14m (wreck)
- Black Forest - 22m
- Blue House - 20m
- Bohol Beach club - 19m (reef)
Nearest Dive Centres to Olang Sanctuary
- Almira Diving Resort
- Amola Diver - ["PADI"]
- Apo scuba
- Aquaventure White Tip Dive Supply
- Atmosphere Resorts - ["PADI"]
- Bahura Dive Siquijor - ["PADI"]
Marine Life in Dumaguete
Home to 522 recorded species including 440 reef fish, 18 sharks & rays, 15 sea cucumbers, 12 sea snails & nudibranchs, 9 seagrass & algae, 9 hard corals.
Notable Species
- Scarlet wrasse (Pseudocheilinus evanidus) - Reef Fish
- Wrasse (Labroides dimidiatus) - Reef Fish
- Banded Toby (Canthigaster valentini) - Reef Fish
- Comettailed wrasse (Oxycheilinus bimaculatus) - Reef Fish
- Six-line wrasse (Pseudocheilinus hexataenia) - Reef Fish
- Wrasse (Thalassoma lunare) - Reef Fish
- Blackspine Unicornfish (Naso minor) - Reef Fish
- Barred Unicornfish (Naso thynnoides) - Reef Fish
- Two-spot Bristletooth (Ctenochaetus binotatus) - Reef Fish
- Angel abu polos (Centropyge vrolikii) - Reef Fish
- Sleek Unicornfish (Naso hexacanthus) - Reef Fish
- Blue-scaled wrasse (Cirrhilabrus cyanopleura) - Reef Fish
- Clark's anemonefish (Amphiprion clarkii) - Reef Fish
- Blenny (Istiblennius dussumieri) - Reef Fish
- Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
- Horned Squirrelfish (Sargocentron cornutum) - Reef Fish
- Blue-ribbon wrasse (Stethojulis trilineata) - Reef Fish
- Bloodspot pipefish (Corythoichthys haematopterus) - Reef Fish
- Sunburst Butterflyfish (Chaetodon kleinii) - Reef Fish
- Bandcheek wrasse (Oxycheilinus digramma) - Reef Fish
Recommended Packing List for Olang Sanctuary
Based on average water temperature of 26.8°C.
- Shorty or Rashguard - warm 27°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